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1
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84943840740
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by the reductive cyclization of 2-nitronaphthalene
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Meisenheimer, J.; Witte, K. Chem. Ber. 1903, 36, 4153 (by the reductive cyclization of 2-nitronaphthalene).
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Meisenheimer, J.1
Witte, K.2
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2
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37049159833
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by a Pschorr cyclization
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Cook, J. W. J. Chem. Soc. 1933, 1592 (by a Pschorr cyclization).
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Cook, J.W.1
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by a Friedel-Crafts acylation and the resolution of a charge-transfer complex
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Newman, M. S.; Lednicer, D. J. Am. Chem. Soc. 1956, 78, 4765 (by a Friedel-Crafts acylation and the resolution of a charge-transfer complex).
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Newman, M.S.1
Lednicer, D.2
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11
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0027960681
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-
See footnote 12 in ref 7b. In addition, stilbene cyclizations: (a) Staab; H. A.; Diehm, M.; Krieger, C. Tetrahedron Lett. 1994, 35, 8357. (b) Larsen, J.; Bechgaard, K. J. Org. Chem. 1996, 67, 1151. (c) Laatsch, H.; Talvitie, A.; Kral, A.; Ernst, B.-P.; Noltemeyer, M. J. Prakt. Chem. 1996, 338, 140. Biaryl couplings: (d) Tanaka, K.; Suzuki, H.; Osuga, H. J. Org. Chem. 1997, 62, 4465, and references therein, (e) Pereira, D. E.; Neelima; Leonard, N. J. Tetrahedron 1990, 46, 5895. (f) Pischel, I.; Grimme, S.; Kotila, S.; Nieger, M.; Vögtle, F. Tetrahedron Asymmetry 1996, 7, 109. The trimerization of 9,10-dichlorophenanthrene: (g) Carey, J. G.; Millar, I. T. J. Chem. Soc. 1959, 3144. Diels-Alder additions to tetrahydro-1,1′-binaphthyl: (h) Minuti, L.; Taticchi, A.; Marrocchi, A.; Gacs-Baitz, E. Tetrahedron 1997, 53, 6873. Altman, Y.; Ginsburg, D. J. Chem. Soc. 1959, 466, and references therein.
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(1994)
Tetrahedron Lett.
, vol.35
, pp. 8357
-
-
Staab, H.A.1
Diehm, M.2
Krieger, C.3
-
12
-
-
0001006849
-
-
See footnote 12 in ref 7b. In addition, stilbene cyclizations: (a) Staab; H. A.; Diehm, M.; Krieger, C. Tetrahedron Lett. 1994, 35, 8357. (b) Larsen, J.; Bechgaard, K. J. Org. Chem. 1996, 67, 1151. (c) Laatsch, H.; Talvitie, A.; Kral, A.; Ernst, B.-P.; Noltemeyer, M. J. Prakt. Chem. 1996, 338, 140. Biaryl couplings: (d) Tanaka, K.; Suzuki, H.; Osuga, H. J. Org. Chem. 1997, 62, 4465, and references therein, (e) Pereira, D. E.; Neelima; Leonard, N. J. Tetrahedron 1990, 46, 5895. (f) Pischel, I.; Grimme, S.; Kotila, S.; Nieger, M.; Vögtle, F. Tetrahedron Asymmetry 1996, 7, 109. The trimerization of 9,10-dichlorophenanthrene: (g) Carey, J. G.; Millar, I. T. J. Chem. Soc. 1959, 3144. Diels-Alder additions to tetrahydro-1,1′-binaphthyl: (h) Minuti, L.; Taticchi, A.; Marrocchi, A.; Gacs-Baitz, E. Tetrahedron 1997, 53, 6873. Altman, Y.; Ginsburg, D. J. Chem. Soc. 1959, 466, and references therein.
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(1996)
J. Org. Chem.
, vol.67
, pp. 1151
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-
Larsen, J.1
Bechgaard, K.2
-
13
-
-
0642376795
-
-
See footnote 12 in ref 7b. In addition, stilbene cyclizations: (a) Staab; H. A.; Diehm, M.; Krieger, C. Tetrahedron Lett. 1994, 35, 8357. (b) Larsen, J.; Bechgaard, K. J. Org. Chem. 1996, 67, 1151. (c) Laatsch, H.; Talvitie, A.; Kral, A.; Ernst, B.-P.; Noltemeyer, M. J. Prakt. Chem. 1996, 338, 140. Biaryl couplings: (d) Tanaka, K.; Suzuki, H.; Osuga, H. J. Org. Chem. 1997, 62, 4465, and references therein, (e) Pereira, D. E.; Neelima; Leonard, N. J. Tetrahedron 1990, 46, 5895. (f) Pischel, I.; Grimme, S.; Kotila, S.; Nieger, M.; Vögtle, F. Tetrahedron Asymmetry 1996, 7, 109. The trimerization of 9,10-dichlorophenanthrene: (g) Carey, J. G.; Millar, I. T. J. Chem. Soc. 1959, 3144. Diels-Alder additions to tetrahydro-1,1′-binaphthyl: (h) Minuti, L.; Taticchi, A.; Marrocchi, A.; Gacs-Baitz, E. Tetrahedron 1997, 53, 6873. Altman, Y.; Ginsburg, D. J. Chem. Soc. 1959, 466, and references therein.
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(1996)
J. Prakt. Chem.
, vol.338
, pp. 140
-
-
Laatsch, H.1
Talvitie, A.2
Kral, A.3
Ernst, B.-P.4
Noltemeyer, M.5
-
14
-
-
0000954764
-
-
and references therein
-
See footnote 12 in ref 7b. In addition, stilbene cyclizations: (a) Staab; H. A.; Diehm, M.; Krieger, C. Tetrahedron Lett. 1994, 35, 8357. (b) Larsen, J.; Bechgaard, K. J. Org. Chem. 1996, 67, 1151. (c) Laatsch, H.; Talvitie, A.; Kral, A.; Ernst, B.-P.; Noltemeyer, M. J. Prakt. Chem. 1996, 338, 140. Biaryl couplings: (d) Tanaka, K.; Suzuki, H.; Osuga, H. J. Org. Chem. 1997, 62, 4465, and references therein, (e) Pereira, D. E.; Neelima; Leonard, N. J. Tetrahedron 1990, 46, 5895. (f) Pischel, I.; Grimme, S.; Kotila, S.; Nieger, M.; Vögtle, F. Tetrahedron Asymmetry 1996, 7, 109. The trimerization of 9,10-dichlorophenanthrene: (g) Carey, J. G.; Millar, I. T. J. Chem. Soc. 1959, 3144. Diels-Alder additions to tetrahydro-1,1′-binaphthyl: (h) Minuti, L.; Taticchi, A.; Marrocchi, A.; Gacs-Baitz, E. Tetrahedron 1997, 53, 6873. Altman, Y.; Ginsburg, D. J. Chem. Soc. 1959, 466, and references therein.
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(1997)
J. Org. Chem.
, vol.62
, pp. 4465
-
-
Tanaka, K.1
Suzuki, H.2
Osuga, H.3
-
15
-
-
0141586666
-
-
See footnote 12 in ref 7b. In addition, stilbene cyclizations: (a) Staab; H. A.; Diehm, M.; Krieger, C. Tetrahedron Lett. 1994, 35, 8357. (b) Larsen, J.; Bechgaard, K. J. Org. Chem. 1996, 67, 1151. (c) Laatsch, H.; Talvitie, A.; Kral, A.; Ernst, B.-P.; Noltemeyer, M. J. Prakt. Chem. 1996, 338, 140. Biaryl couplings: (d) Tanaka, K.; Suzuki, H.; Osuga, H. J. Org. Chem. 1997, 62, 4465, and references therein, (e) Pereira, D. E.; Neelima; Leonard, N. J. Tetrahedron 1990, 46, 5895. (f) Pischel, I.; Grimme, S.; Kotila, S.; Nieger, M.; Vögtle, F. Tetrahedron Asymmetry 1996, 7, 109. The trimerization of 9,10-dichlorophenanthrene: (g) Carey, J. G.; Millar, I. T. J. Chem. Soc. 1959, 3144. Diels-Alder additions to tetrahydro-1,1′-binaphthyl: (h) Minuti, L.; Taticchi, A.; Marrocchi, A.; Gacs-Baitz, E. Tetrahedron 1997, 53, 6873. Altman, Y.; Ginsburg, D. J. Chem. Soc. 1959, 466, and references therein.
-
(1990)
Tetrahedron
, vol.46
, pp. 5895
-
-
Pereira, D.E.1
Neelima2
Leonard, N.J.3
-
16
-
-
0030064126
-
-
See footnote 12 in ref 7b. In addition, stilbene cyclizations: (a) Staab; H. A.; Diehm, M.; Krieger, C. Tetrahedron Lett. 1994, 35, 8357. (b) Larsen, J.; Bechgaard, K. J. Org. Chem. 1996, 67, 1151. (c) Laatsch, H.; Talvitie, A.; Kral, A.; Ernst, B.-P.; Noltemeyer, M. J. Prakt. Chem. 1996, 338, 140. Biaryl couplings: (d) Tanaka, K.; Suzuki, H.; Osuga, H. J. Org. Chem. 1997, 62, 4465, and references therein, (e) Pereira, D. E.; Neelima; Leonard, N. J. Tetrahedron 1990, 46, 5895. (f) Pischel, I.; Grimme, S.; Kotila, S.; Nieger, M.; Vögtle, F. Tetrahedron Asymmetry 1996, 7, 109. The trimerization of 9,10-dichlorophenanthrene: (g) Carey, J. G.; Millar, I. T. J. Chem. Soc. 1959, 3144. Diels-Alder additions to tetrahydro-1,1′-binaphthyl: (h) Minuti, L.; Taticchi, A.; Marrocchi, A.; Gacs-Baitz, E. Tetrahedron 1997, 53, 6873. Altman, Y.; Ginsburg, D. J. Chem. Soc. 1959, 466, and references therein.
-
(1996)
Tetrahedron Asymmetry
, vol.7
, pp. 109
-
-
Pischel, I.1
Grimme, S.2
Kotila, S.3
Nieger, M.4
Vögtle, F.5
-
17
-
-
37049061408
-
-
See footnote 12 in ref 7b. In addition, stilbene cyclizations: (a) Staab; H. A.; Diehm, M.; Krieger, C. Tetrahedron Lett. 1994, 35, 8357. (b) Larsen, J.; Bechgaard, K. J. Org. Chem. 1996, 67, 1151. (c) Laatsch, H.; Talvitie, A.; Kral, A.; Ernst, B.-P.; Noltemeyer, M. J. Prakt. Chem. 1996, 338, 140. Biaryl couplings: (d) Tanaka, K.; Suzuki, H.; Osuga, H. J. Org. Chem. 1997, 62, 4465, and references therein, (e) Pereira, D. E.; Neelima; Leonard, N. J. Tetrahedron 1990, 46, 5895. (f) Pischel, I.; Grimme, S.; Kotila, S.; Nieger, M.; Vögtle, F. Tetrahedron Asymmetry 1996, 7, 109. The trimerization of 9,10-dichlorophenanthrene: (g) Carey, J. G.; Millar, I. T. J. Chem. Soc. 1959, 3144. Diels-Alder additions to tetrahydro-1,1′-binaphthyl: (h) Minuti, L.; Taticchi, A.; Marrocchi, A.; Gacs-Baitz, E. Tetrahedron 1997, 53, 6873. Altman, Y.; Ginsburg, D. J. Chem. Soc. 1959, 466, and references therein.
-
(1959)
J. Chem. Soc.
, pp. 3144
-
-
Carey, J.G.1
Millar, I.T.2
-
18
-
-
0030986374
-
-
See footnote 12 in ref 7b. In addition, stilbene cyclizations: (a) Staab; H. A.; Diehm, M.; Krieger, C. Tetrahedron Lett. 1994, 35, 8357. (b) Larsen, J.; Bechgaard, K. J. Org. Chem. 1996, 67, 1151. (c) Laatsch, H.; Talvitie, A.; Kral, A.; Ernst, B.-P.; Noltemeyer, M. J. Prakt. Chem. 1996, 338, 140. Biaryl couplings: (d) Tanaka, K.; Suzuki, H.; Osuga, H. J. Org. Chem. 1997, 62, 4465, and references therein, (e) Pereira, D. E.; Neelima; Leonard, N. J. Tetrahedron 1990, 46, 5895. (f) Pischel, I.; Grimme, S.; Kotila, S.; Nieger, M.; Vögtle, F. Tetrahedron Asymmetry 1996, 7, 109. The trimerization of 9,10-dichlorophenanthrene: (g) Carey, J. G.; Millar, I. T. J. Chem. Soc. 1959, 3144. Diels-Alder additions to tetrahydro-1,1′-binaphthyl: (h) Minuti, L.; Taticchi, A.; Marrocchi, A.; Gacs-Baitz, E. Tetrahedron 1997, 53, 6873. Altman, Y.; Ginsburg, D. J. Chem. Soc. 1959, 466, and references therein.
-
(1997)
Tetrahedron
, vol.53
, pp. 6873
-
-
Minuti, L.1
Taticchi, A.2
Marrocchi, A.3
Gacs-Baitz, E.4
-
19
-
-
9844267945
-
-
and references therein
-
See footnote 12 in ref 7b. In addition, stilbene cyclizations: (a) Staab; H. A.; Diehm, M.; Krieger, C. Tetrahedron Lett. 1994, 35, 8357. (b) Larsen, J.; Bechgaard, K. J. Org. Chem. 1996, 67, 1151. (c) Laatsch, H.; Talvitie, A.; Kral, A.; Ernst, B.-P.; Noltemeyer, M. J. Prakt. Chem. 1996, 338, 140. Biaryl couplings: (d) Tanaka, K.; Suzuki, H.; Osuga, H. J. Org. Chem. 1997, 62, 4465, and references therein, (e) Pereira, D. E.; Neelima; Leonard, N. J. Tetrahedron 1990, 46, 5895. (f) Pischel, I.; Grimme, S.; Kotila, S.; Nieger, M.; Vögtle, F. Tetrahedron Asymmetry 1996, 7, 109. The trimerization of 9,10-dichlorophenanthrene: (g) Carey, J. G.; Millar, I. T. J. Chem. Soc. 1959, 3144. Diels-Alder additions to tetrahydro-1,1′-binaphthyl: (h) Minuti, L.; Taticchi, A.; Marrocchi, A.; Gacs-Baitz, E. Tetrahedron 1997, 53, 6873. Altman, Y.; Ginsburg, D. J. Chem. Soc. 1959, 466, and references therein.
-
(1959)
Chem. Soc.
, pp. 466
-
-
Altman, Y.1
Ginsburg, D.J.2
-
20
-
-
0001211751
-
-
(a) Yang, B.; Liu, L.; Katz, T. J.; Liberko, C. A.; Miller, L. L. J. Am. Chem. Soc. 1991, 113, 8993.
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(1991)
J. Am. Chem. Soc.
, vol.113
, pp. 8993
-
-
Yang, B.1
Liu, L.2
Katz, T.J.3
Liberko, C.A.4
Miller, L.L.5
-
22
-
-
9844263735
-
-
For the few functionalized examples known until recently, see footnote 4 of ref 7b. In addition, pyridine-containing helicenes: (a) Reference 6a
-
For the few functionalized examples known until recently, see footnote 4 of ref 7b. In addition, pyridine-containing helicenes: (a) Reference 6a. (b) Bell, T. W.; Jousselin, J. Am. Chem. Soc. 1991, 113, 6283. (c) Deshayes, K.; Broene, R. D.; Chao, I.; Knobler, C. B.; Diederich, F. J. Org. Chem. 1991, 56, 6787. Helicenecarboxylic acid derivatives: (d) Owens, L.; Thilgen, C.; Diedrich, F.; Knobler, C. B. Helv. Chim. Acta 1993, 76, 2757. (e) Frimer, A. A.; Kinder, J. D.; Youngs, W. J.; Meador, M. A. B. J. Org. Chem. 1995, 60, 1658. A phosphine: (f) Terfort, A.; Görls, H.; Brunner, H. Synthesis 1997, 79. (g) Reetz, M. T.; Beuttenmüller, E. W.; Goddard, R. Tetrahedron Lett. 1997, 38, 3211. [5]-, [6]-, [7]-, and [8]helicenebisquinones: ref 7.
-
-
-
-
23
-
-
0001383629
-
-
For the few functionalized examples known until recently, see footnote 4 of ref 7b. In addition, pyridine-containing helicenes: (a) Reference 6a. (b) Bell, T. W.; Jousselin, J. Am. Chem. Soc. 1991, 113, 6283. (c) Deshayes, K.; Broene, R. D.; Chao, I.; Knobler, C. B.; Diederich, F. J. Org. Chem. 1991, 56, 6787. Helicenecarboxylic acid derivatives: (d) Owens, L.; Thilgen, C.; Diedrich, F.; Knobler, C. B. Helv. Chim. Acta 1993, 76, 2757. (e) Frimer, A. A.; Kinder, J. D.; Youngs, W. J.; Meador, M. A. B. J. Org. Chem. 1995, 60, 1658. A phosphine: (f) Terfort, A.; Görls, H.; Brunner, H. Synthesis 1997, 79. (g) Reetz, M. T.; Beuttenmüller, E. W.; Goddard, R. Tetrahedron Lett. 1997, 38, 3211. [5]-, [6]-, [7]-, and [8]helicenebisquinones: ref 7.
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(1991)
J. Am. Chem. Soc.
, vol.113
, pp. 6283
-
-
Bell, T.W.1
Jousselin2
-
24
-
-
0000910871
-
-
For the few functionalized examples known until recently, see footnote 4 of ref 7b. In addition, pyridine-containing helicenes: (a) Reference 6a. (b) Bell, T. W.; Jousselin, J. Am. Chem. Soc. 1991, 113, 6283. (c) Deshayes, K.; Broene, R. D.; Chao, I.; Knobler, C. B.; Diederich, F. J. Org. Chem. 1991, 56, 6787. Helicenecarboxylic acid derivatives: (d) Owens, L.; Thilgen, C.; Diedrich, F.; Knobler, C. B. Helv. Chim. Acta 1993, 76, 2757. (e) Frimer, A. A.; Kinder, J. D.; Youngs, W. J.; Meador, M. A. B. J. Org. Chem. 1995, 60, 1658. A phosphine: (f) Terfort, A.; Görls, H.; Brunner, H. Synthesis 1997, 79. (g) Reetz, M. T.; Beuttenmüller, E. W.; Goddard, R. Tetrahedron Lett. 1997, 38, 3211. [5]-, [6]-, [7]-, and [8]helicenebisquinones: ref 7.
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(1991)
J. Org. Chem.
, vol.56
, pp. 6787
-
-
Deshayes, K.1
Broene, R.D.2
Chao, I.3
Knobler, C.B.4
Diederich, F.5
-
25
-
-
0027738704
-
-
For the few functionalized examples known until recently, see footnote 4 of ref 7b. In addition, pyridine-containing helicenes: (a) Reference 6a. (b) Bell, T. W.; Jousselin, J. Am. Chem. Soc. 1991, 113, 6283. (c) Deshayes, K.; Broene, R. D.; Chao, I.; Knobler, C. B.; Diederich, F. J. Org. Chem. 1991, 56, 6787. Helicenecarboxylic acid derivatives: (d) Owens, L.; Thilgen, C.; Diedrich, F.; Knobler, C. B. Helv. Chim. Acta 1993, 76, 2757. (e) Frimer, A. A.; Kinder, J. D.; Youngs, W. J.; Meador, M. A. B. J. Org. Chem. 1995, 60, 1658. A phosphine: (f) Terfort, A.; Görls, H.; Brunner, H. Synthesis 1997, 79. (g) Reetz, M. T.; Beuttenmüller, E. W.; Goddard, R. Tetrahedron Lett. 1997, 38, 3211. [5]-, [6]-, [7]-, and [8]helicenebisquinones: ref 7.
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(1993)
Helv. Chim. Acta
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, pp. 2757
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-
Owens, L.1
Thilgen, C.2
Diedrich, F.3
Knobler, C.B.4
-
26
-
-
0347555762
-
-
For the few functionalized examples known until recently, see footnote 4 of ref 7b. In addition, pyridine-containing helicenes: (a) Reference 6a. (b) Bell, T. W.; Jousselin, J. Am. Chem. Soc. 1991, 113, 6283. (c) Deshayes, K.; Broene, R. D.; Chao, I.; Knobler, C. B.; Diederich, F. J. Org. Chem. 1991, 56, 6787. Helicenecarboxylic acid derivatives: (d) Owens, L.; Thilgen, C.; Diedrich, F.; Knobler, C. B. Helv. Chim. Acta 1993, 76, 2757. (e) Frimer, A. A.; Kinder, J. D.; Youngs, W. J.; Meador, M. A. B. J. Org. Chem. 1995, 60, 1658. A phosphine: (f) Terfort, A.; Görls, H.; Brunner, H. Synthesis 1997, 79. (g) Reetz, M. T.; Beuttenmüller, E. W.; Goddard, R. Tetrahedron Lett. 1997, 38, 3211. [5]-, [6]-, [7]-, and [8]helicenebisquinones: ref 7.
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J. Org. Chem.
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Frimer, A.A.1
Kinder, J.D.2
Youngs, W.J.3
Meador, M.A.B.4
-
27
-
-
0031058136
-
-
For the few functionalized examples known until recently, see footnote 4 of ref 7b. In addition, pyridine-containing helicenes: (a) Reference 6a. (b) Bell, T. W.; Jousselin, J. Am. Chem. Soc. 1991, 113, 6283. (c) Deshayes, K.; Broene, R. D.; Chao, I.; Knobler, C. B.; Diederich, F. J. Org. Chem. 1991, 56, 6787. Helicenecarboxylic acid derivatives: (d) Owens, L.; Thilgen, C.; Diedrich, F.; Knobler, C. B. Helv. Chim. Acta 1993, 76, 2757. (e) Frimer, A. A.; Kinder, J. D.; Youngs, W. J.; Meador, M. A. B. J. Org. Chem. 1995, 60, 1658. A phosphine: (f) Terfort, A.; Görls, H.; Brunner, H. Synthesis 1997, 79. (g) Reetz, M. T.; Beuttenmüller, E. W.; Goddard, R. Tetrahedron Lett. 1997, 38, 3211. [5]-, [6]-, [7]-, and [8]helicenebisquinones: ref 7.
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(1997)
Synthesis
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Terfort, A.1
Görls, H.2
Brunner, H.3
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28
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0042189443
-
-
[5]-, [6]-, [7]-, and [8]helicenebisquinones: ref 7
-
For the few functionalized examples known until recently, see footnote 4 of ref 7b. In addition, pyridine-containing helicenes: (a) Reference 6a. (b) Bell, T. W.; Jousselin, J. Am. Chem. Soc. 1991, 113, 6283. (c) Deshayes, K.; Broene, R. D.; Chao, I.; Knobler, C. B.; Diederich, F. J. Org. Chem. 1991, 56, 6787. Helicenecarboxylic acid derivatives: (d) Owens, L.; Thilgen, C.; Diedrich, F.; Knobler, C. B. Helv. Chim. Acta 1993, 76, 2757. (e) Frimer, A. A.; Kinder, J. D.; Youngs, W. J.; Meador, M. A. B. J. Org. Chem. 1995, 60, 1658. A phosphine: (f) Terfort, A.; Görls, H.; Brunner, H. Synthesis 1997, 79. (g) Reetz, M. T.; Beuttenmüller, E. W.; Goddard, R. Tetrahedron Lett. 1997, 38, 3211. [5]-, [6]-, [7]-, and [8]helicenebisquinones: ref 7.
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Tetrahedron Lett.
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Reetz, M.T.1
Beuttenmüller, E.W.2
Goddard, R.3
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29
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9844259449
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-
In part the reason is that for the photocyclizations, the solutions must be very dilute. See footnote 3 in reference 7b
-
In part the reason is that for the photocyclizations, the solutions must be very dilute. See footnote 3 in reference 7b.
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33751144196
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Preliminary communication: Willmore, N. D.; Liu, L.; Katz, T. J. Angew. Chem., Int. Ed. Engl. 1992, 31, 1093.
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5a,13
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5a,13
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33
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Janke, R. H.; Haufe, G.; Würthwein, E.-U.; Borkent, J. H. J. Am. Chem. Soc. 1996, 118, 6031. and references therein.
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The Supporting Information describes how 4a-c, 6a,b, and 12 were Prepared
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The Supporting Information describes how 4a-c, 6a,b, and 12 were Prepared.
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42
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0142136446
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Zinc, acetic anhydride or benzoyl chloride, and pyridine or other tertiary amines convert quinones into hydroquinone esters: (a) Fieser, L. F.; Campbell, W. P.; Fry, E. M.; Gates, Jr., M. D. J. Am. Chem. Soc. 1939, 61, 3216. (b) Gaertner, R. J. Org. Chem. 1959, 24, 61.
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9844230410
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1, orange crystal, a = 9.721(2) Å, b = 21.389(6) Å. c = 13.604(3) Å, β = 98.49-(2)°, Z = 2, R (obs data) = 7.76%, wR = 10.24%, R (all data) = 9.88%, wR = 10.85%, GOF = 1.71
-
1, orange crystal, a = 9.721(2) Å, b = 21.389(6) Å. c = 13.604(3) Å, β = 98.49-(2)°, Z = 2, R (obs data) = 7.76%, wR = 10.24%, R (all data) = 9.88%, wR = 10.85%, GOF = 1.71.
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22 eliminates methanol from dimethyl acetals; (a) Miller, R. D.; McKean, D. R. Tetrahedron Lett. 1982, 23, 323. In other procedures, TMSI can be replaced as a reagent by TMSCl plus NaI: (b) Monta, T.; Okamoto, Y.; Sakurai, H. J. Chem. Soc., Chem. Commun. 1978, 874. (c) Morita, T.; Okamoto, Y.; Sakurai, H. Tetrahedron Lett. 1978, 2523. (d) Morita, T.; Yoshida, S.; Okamoto, Y.; Sakurai; H. Synthesis 1979, 379. (e) Olah, G. A.; Narang, S. C.; Balaram Gupta, B. G.; Malhotra, R. J. Org. Chem. 1979, 44, 1247.
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22 eliminates methanol from dimethyl acetals; (a) Miller, R. D.; McKean, D. R. Tetrahedron Lett. 1982, 23, 323. In other procedures, TMSI can be replaced as a reagent by TMSCl plus NaI: (b) Monta, T.; Okamoto, Y.; Sakurai, H. J. Chem. Soc., Chem. Commun. 1978, 874. (c) Morita, T.; Okamoto, Y.; Sakurai, H. Tetrahedron Lett. 1978, 2523. (d) Morita, T.; Yoshida, S.; Okamoto, Y.; Sakurai; H. Synthesis 1979, 379. (e) Olah, G. A.; Narang, S. C.; Balaram Gupta, B. G.; Malhotra, R. J. Org. Chem. 1979, 44, 1247.
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22 eliminates methanol from dimethyl acetals; (a) Miller, R. D.; McKean, D. R. Tetrahedron Lett. 1982, 23, 323. In other procedures, TMSI can be replaced as a reagent by TMSCl plus NaI: (b) Monta, T.; Okamoto, Y.; Sakurai, H. J. Chem. Soc., Chem. Commun. 1978, 874. (c) Morita, T.; Okamoto, Y.; Sakurai, H. Tetrahedron Lett. 1978, 2523. (d) Morita, T.; Yoshida, S.; Okamoto, Y.; Sakurai; H. Synthesis 1979, 379. (e) Olah, G. A.; Narang, S. C.; Balaram Gupta, B. G.; Malhotra, R. J. Org. Chem. 1979, 44, 1247.
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5a,b only 14 specify the amounts of reagents used and the amounts of products obtained, and in these, the average yield per photocyclization was ≤66 mg and the average amount of solvent 1.2 L.
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Inversion barriers have been calculated for other helicenes. See reference 13
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Ono, N.; Yamada, T.; Saito, T.; Tanaka, K.; Kaji, A. Bull. Chem. Soc. Jpn. 1978, 57, 2401.
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Ono, N.1
Yamada, T.2
Saito, T.3
Tanaka, K.4
Kaji, A.5
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115
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-
9844234790
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3 resulted in significant protodesilylation
-
3 resulted in significant protodesilylation.
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-
-
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116
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33845556160
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and references therein
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Evans, D. A.; Nelson, J. V.; Vogel, E.; Taber, T. R. J. Am. Chem. Soc. 1981, 103, 3099, and references therein.
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Evans, D.A.1
Nelson, J.V.2
Vogel, E.3
Taber, T.R.4
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