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2
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33644559491
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Ed, A. Brossi, Academic Press, London
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a) P. J. Houghton in The Alkaloids (Ed.: A. Brossi), Academic Press, London, 1987, vol. 31, pp. 67-100;
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(1987)
The Alkaloids
, vol.31
, pp. 67-100
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Houghton, P.J.1
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3
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0028131465
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b) P. J. Houghton, T. Z. Woldemariam, A. I. Khan, A. Burke, N. Mahmood, Antivir. Res. 1994, 25, 235-244.
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Antivir. Res
, vol.25
, pp. 235-244
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Houghton, P.J.1
Woldemariam, T.Z.2
Khan, A.I.3
Burke, A.4
Mahmood, N.5
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5
-
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0020420387
-
-
The isolation, structural elucidation, and bioassays of schumanniophytine stimulated the synthesis of heterocycles containing combined chromone-pyridine systems, but studies of their bioactivities were apparently not pursued, see
-
The isolation, structural elucidation, and bioassays of schumanniophytine stimulated the synthesis of heterocycles containing combined chromone-pyridine systems, but studies of their bioactivities were apparently not pursued, see: O. H. Hishmat, N. M. A. El-Ebrashi, Sh. E. El-Naem, Synthesis 1982, 1075-1077.
-
(1982)
Synthesis
, pp. 1075-1077
-
-
Hishmat, O.H.1
El-Ebrashi, N.M.A.2
El-Naem, S.E.3
-
6
-
-
0001195778
-
-
Prepared from phloroacetophenone in four steps and 21% overall yield
-
T. R. Kelly, M. H. Kim, J. Org. Chem. 1992, 57, 1593-1597. Prepared from phloroacetophenone in four steps and 21% overall yield.
-
(1992)
J. Org. Chem
, vol.57
, pp. 1593-1597
-
-
Kelly, T.R.1
Kim, M.H.2
-
8
-
-
18744384857
-
-
2nd ed, Eds, F. Diederich, A. de Meijere, Wiley-VCH, Weinheim
-
b) E. J.-G. Anctil, V. Snieckus in Metal-Catalyzed Cross-Coupling Reactions, 2nd ed. (Eds.: F. Diederich, A. de Meijere), Wiley-VCH, Weinheim, 2004, pp. 761-819.
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(2004)
Metal-Catalyzed Cross-Coupling Reactions
, pp. 761-819
-
-
Anctil, E.J.-G.1
Snieckus, V.2
-
9
-
-
0001207373
-
-
For a successful model reaction, see
-
For a successful model reaction, see: W. Wang, V. Snieckus, J. Org. Chem. 1992, 57, 424-426.
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(1992)
J. Org. Chem
, vol.57
, pp. 424-426
-
-
Wang, W.1
Snieckus, V.2
-
10
-
-
3242659209
-
-
For the scope of such directed remote metalation (DreM) reactions in context of the synthetically useful and mechanistically interesting complex induced proximity effect (CIPE) concept, see: M. C. Whisler, S. MacNeil, V. Snieckus, P. Beak, Angew. Chem. Int. Ed. 2004, 43, 2206-2225.
-
For the scope of such directed remote metalation (DreM) reactions in context of the synthetically useful and mechanistically interesting complex induced proximity effect (CIPE) concept, see: M. C. Whisler, S. MacNeil, V. Snieckus, P. Beak, Angew. Chem. Int. Ed. 2004, 43, 2206-2225.
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-
-
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11
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53849087825
-
-
PhD Thesis, Queen's University, Canada
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T. K. Macklin, PhD Thesis, Queen's University, Canada, 2007.
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(2007)
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-
Macklin, T.K.1
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12
-
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0004240410
-
-
For an instructive discussion of the delicate pro/con intricacies of model studies, see:, Cambridge University Press, UK
-
For an instructive discussion of the delicate pro/con intricacies of model studies, see: C. J. Suckling, K. E. Suckling, C. W. Suckling, Chemistry Through Models, Cambridge University Press, UK, 1978, p. 149ff.
-
(1978)
Chemistry Through Models
-
-
Suckling, C.J.1
Suckling, K.E.2
Suckling, C.W.3
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13
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30744470203
-
-
For recent case studies, see, Wiley-VCH, Weinheim
-
For recent case studies, see M. A. Sierra, M. C. de la Torre, Dead Ends and Detours, Wiley-VCH, Weinheim, 2004, pp. 41, 59, 61, 108.
-
(2004)
Dead Ends and Detours
-
-
Sierra, M.A.1
de la Torre, M.C.2
-
14
-
-
53849095131
-
-
For a precise statement (A theory has only the alternative of being right or wrong. A model has a third possibility: it may be right, but irrelevant), see: M. Eigen in The Physicist's Conception of Nature (Ed.: J. Mehra), Dordrecht, Reidel, 1973.
-
For a precise statement ("A theory has only the alternative of being right or wrong. A model has a third possibility: it may be right, but irrelevant"), see: M. Eigen in The Physicist's Conception of Nature (Ed.: J. Mehra), Dordrecht, Reidel, 1973.
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-
-
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16
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53849135893
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For recent reviews on the DoM reaction and its connection to cross-coupling chemistry, see: a T. Macklin, V. Snieckus in Handbook of C-H Transformations (Ed.: G. Dyker), Wiley-VCH, Weinheim, 2005, 1, pp. 106-118;
-
For recent reviews on the DoM reaction and its connection to cross-coupling chemistry, see: a) T. Macklin, V. Snieckus in Handbook of C-H Transformations (Ed.: G. Dyker), Wiley-VCH, Weinheim, 2005, vol. 1, pp. 106-118;
-
-
-
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17
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-
0141713788
-
-
Ed, D. Astruc, Wiley-VCH, Weinheim
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b) C. G. Hartung, V. Snieckus in Modern Arene Chemistry (Ed.: D. Astruc), Wiley-VCH, Weinheim, 2002, pp. 330-367.
-
(2002)
Modern Arene Chemistry
, pp. 330-367
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-
Hartung, C.G.1
Snieckus, V.2
-
18
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-
53849113648
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-
Handling and purification of this material proved difficult and was an unpleasant odiferous experience
-
Handling and purification of this material proved difficult and was an unpleasant odiferous experience.
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-
-
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19
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53849099977
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The hindrance is corroborated by the need to use -100°C temperatures for the TESCl reaction owing to its slower reactivity over TMSCl, which thus allowed the faster (intramolecular) anionic ortho-Fries rearrangement to occur, see ref.[8
-
[8]
-
-
-
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20
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-
53849120913
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The migration was conveniently followed by React IR by observing the disappearance of the carbamoyl group (ν=1725 cm-1) and the appearance of the amide carbonyl group stretching frequencies (ν=1635 cm -1, the latter was only observed upon aqueous quench, which suggests the potential for trapping of the tetrahedral intermediate see Supporting Information
-
-1); the latter was only observed upon aqueous quench, which suggests the potential for trapping of the tetrahedral intermediate (see Supporting Information).
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22
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29844449635
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Although compound 12a, upon treatment with ICl, gave the corresponding ipso-Friedel-Crafts product in 89% yield Z. Zhao, V. Snieckus, Org. Lett. 2005, 7, 2523-2526, attempts to effect ipso-ortho-Fries and ipso-Friedel-Crafts acylation on both 12a and 12b, respectively, as a prelude for chromone ring annulation, resulted only in desilylation and other undesired products, see ref.[8
-
[8]
-
-
-
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23
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0000975966
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-
For similar amide coordinative-assisted demethylation, see: a
-
For similar amide coordinative-assisted demethylation, see: a) M. J. Sharp, V. Snieckus, Tetrahedron Lett. 1985, 26, 5997-6000;
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(1985)
Tetrahedron Lett
, vol.26
, pp. 5997-6000
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-
Sharp, M.J.1
Snieckus, V.2
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24
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0025816845
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b) B. I. Alo, A. Kandil, P. A. Patil, M. J. Sharp, V. Snieckus, P. D. Joseph, J. Org. Chem. 1991, 56, 3763-3768;
-
(1991)
J. Org. Chem
, vol.56
, pp. 3763-3768
-
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Alo, B.I.1
Kandil, A.2
Patil, P.A.3
Sharp, M.J.4
Snieckus, V.5
Joseph, P.D.6
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25
-
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0037696881
-
-
c) A. V. Kalinin, M. A. Reed, B. H. Norman, V. Snieckus, J. Org. Chem. 2003, 68, 5992-5999.
-
(2003)
J. Org. Chem
, vol.68
, pp. 5992-5999
-
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Kalinin, A.V.1
Reed, M.A.2
Norman, B.H.3
Snieckus, V.4
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26
-
-
53849139747
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-
Subjection of compound 13 to classical Lewis acid Fries rearrangement [H. Heaney, Comprehensive Organic Synthesis (Ed.: B. M. Trost), Pergamon, Oxford, 1991, 2, pp. 733-752]
-
Subjection of compound 13 to classical Lewis acid Fries rearrangement [H. Heaney, Comprehensive Organic Synthesis (Ed.: B. M. Trost), Pergamon, Oxford, 1991, vol. 2, pp. 733-752]
-
-
-
-
27
-
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84993913483
-
-
followed by reacylation afforded a 1:1 mixture of the corresponding 9- and 7-acetyl derivatives. Attempts to effect a Baker-Venkataraman chromone ring syntheses I. Hirao, M. Yamaguchi, M. Hamada, Synthesis 1984, 1076-1078.
-
followed by reacylation afforded a 1:1 mixture of the corresponding 9- and 7-acetyl derivatives. Attempts to effect a Baker-Venkataraman chromone ring syntheses (I. Hirao, M. Yamaguchi, M. Hamada, Synthesis 1984, 1076-1078.
-
-
-
-
28
-
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33846045729
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-
For use in natural product synthesis, see S. Gattinoni, L. Merlini, S. Dallavalle, Tetrahedron Lett. 2007, 48, 1049-1051 on the 9-acetyl derivative as well as on the corresponding C-10 phenol afforded 14 albeit in low and poorly reproducible yields, see ref.[8
-
[8]
-
-
-
-
29
-
-
31144465775
-
-
Attempts to adapt recent electrophilic Meldrum's acid chemistry were also unsuccessful, see
-
Attempts to adapt recent electrophilic Meldrum's acid chemistry were also unsuccessful, see: E. Fillion, A. M. Dumas, B. A. Kuropatwa, N. R. Malhotra, T. C. Sitler, J. Org. Chem. 2006, 71, 409-412.
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(2006)
J. Org. Chem
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, pp. 409-412
-
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Fillion, E.1
Dumas, A.M.2
Kuropatwa, B.A.3
Malhotra, N.R.4
Sitler, T.C.5
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30
-
-
33947087705
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-
P. E. Eaton, G. R. Carlson, J. T. Lee, J. Org. Chem. 1973, 38, 4071-4073.
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(1973)
J. Org. Chem
, vol.38
, pp. 4071-4073
-
-
Eaton, P.E.1
Carlson, G.R.2
Lee, J.T.3
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31
-
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0000778391
-
-
For application to chromone ring construction, see
-
For application to chromone ring construction, see: L. W. McGarry, M. R. Detty, J. Org. Chem. 1990, 55, 4349-4356.
-
(1990)
J. Org. Chem
, vol.55
, pp. 4349-4356
-
-
McGarry, L.W.1
Detty, M.R.2
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32
-
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33646452253
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-
See, inter alia: N-anionic Fries rearrangement: S. L. MacNeil, B. J. Wilson, V. Snieckus, Org. Lett. 2006, 8, 1133-1136;
-
See, inter alia: N-anionic Fries rearrangement: S. L. MacNeil, B. J. Wilson, V. Snieckus, Org. Lett. 2006, 8, 1133-1136;
-
-
-
-
33
-
-
0942287121
-
-
remote metalation route to fluorenones: J. A. McCubbin, X. Tong, R. Wang, Y. Zhao, V. Snieckus, R. P. Lemieux, J. Am. Chem. Soc. 2004, 126, 1161-1167;
-
remote metalation route to fluorenones: J. A. McCubbin, X. Tong, R. Wang, Y. Zhao, V. Snieckus, R. P. Lemieux, J. Am. Chem. Soc. 2004, 126, 1161-1167;
-
-
-
-
34
-
-
3242691776
-
-
vinylogous Fries rearrangement: M. A. Reed, M. T. Chang, V. Snieckus, Org. Lett. 2004, 6, 2297-2300;
-
vinylogous Fries rearrangement: M. A. Reed, M. T. Chang, V. Snieckus, Org. Lett. 2004, 6, 2297-2300;
-
-
-
-
35
-
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3242670935
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remote metalation to indolocarbazoles: X. Cai, V. Snieckus, Org. Lett. 2004, 6, 2293-2295;
-
remote metalation to indolocarbazoles: X. Cai, V. Snieckus, Org. Lett. 2004, 6, 2293-2295;
-
-
-
-
36
-
-
0032500061
-
-
carbamoyl Baker-Venkataraman reaction: A. V. Kalinin, A. J. M. da Silva, C. C. Lopes, R. S. C. Lopes, V. Snieckus, Tetrahedron Lett. 1998, 39, 4995-4998.
-
carbamoyl Baker-Venkataraman reaction: A. V. Kalinin, A. J. M. da Silva, C. C. Lopes, R. S. C. Lopes, V. Snieckus, Tetrahedron Lett. 1998, 39, 4995-4998.
-
-
-
-
37
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34247636039
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-
See, inter alia: regiospecific arene metalation
-
See, inter alia: regiospecific arene metalation: T.-H. Nguyen, N. T. T. Chau, A.-S. Castanet, K. P. P. Nguyen, J. Mortier, J. Org. Chem. 2007, 72, 3419-3429;
-
(2007)
J. Org. Chem
, vol.72
, pp. 3419-3429
-
-
Nguyen, T.-H.1
Chau, N.T.T.2
Castanet, A.-S.3
Nguyen, K.P.P.4
Mortier, J.5
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38
-
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33846065953
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regiocontrolled ferrocene metalation: D. Herault, K. Aelvoet, A. J. Blatch, A. Al-Majid, C. A. Smethurst, A. Whiting, J. Org. Chem. 2007, 72, 71-75;
-
regiocontrolled ferrocene metalation: D. Herault, K. Aelvoet, A. J. Blatch, A. Al-Majid, C. A. Smethurst, A. Whiting, J. Org. Chem. 2007, 72, 71-75;
-
-
-
-
39
-
-
33745223863
-
-
regioselective heteroarene metalation: C. Berghian, E. Condamine, N. Ple, A. Turck, I. Silaghi-Dumitrescu, C. Maiereanu, M. Darabantu, Tetrahedron 2006, 62, 7339-7354;
-
regioselective heteroarene metalation: C. Berghian, E. Condamine, N. Ple, A. Turck, I. Silaghi-Dumitrescu, C. Maiereanu, M. Darabantu, Tetrahedron 2006, 62, 7339-7354;
-
-
-
-
40
-
-
0035906496
-
-
anionic ortho-quinone methide generation: R. M. Jones, R. W. Van De Water, C. C. Lindsey, C. Hoarau, T. Ung, T. R. R. Pettus, J. Org. Chem. 2001, 66, 3435-3441.
-
anionic ortho-quinone methide generation: R. M. Jones, R. W. Van De Water, C. C. Lindsey, C. Hoarau, T. Ung, T. R. R. Pettus, J. Org. Chem. 2001, 66, 3435-3441.
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