-
2
-
-
0001232903
-
-
b) Overman, L. E.; Abelman, M. M.; Kucera, D. J.; Tran, D. V.; Ricca, D. J. Pure Appl. Chem. 1992, 64, 1813;
-
(1992)
Pure Appl. Chem.
, vol.64
, pp. 1813
-
-
Overman, L.E.1
Abelman, M.M.2
Kucera, D.J.3
Tran, D.V.4
Ricca, D.J.5
-
7
-
-
0027327121
-
-
and references cited therein
-
c) Kondo, K.; Sodeoka, M.; Mori, M.; Shibasaki, M. Synthesis, 1993, 920 and references cited therein.
-
(1993)
Synthesis
, pp. 920
-
-
Kondo, K.1
Sodeoka, M.2
Mori, M.3
Shibasaki, M.4
-
9
-
-
31544457567
-
-
The difficulty to perform the intramolecular Heck reaction with carbohydrate precursors is emphasized. See: Nguefack, J.-F.; Bolitt, V.; Sinou, D. J. Chem. Soc., Chem. Commun. 1995, 1893.
-
(1995)
J. Chem. Soc., Chem. Commun.
, pp. 1893
-
-
Nguefack, J.-F.1
Bolitt, V.2
Sinou, D.3
-
10
-
-
1542422613
-
-
Furo[2,3b]pyran: a) Luebbers, T.; Schaefer, H. J. Synlett 1992, 743; b) Mellor, J. M.; Mohammed, S. Tetrahedron 1993, 49, 7557; c) Pandey, G.; Sesha Poleswara Rao, K.S.; Soma Sekhar, B. B. V. J. Chem. Soc., Chem. Commun., 1993, 1636; d) Hackmann, C.; Schaefer, H. J. Tetrahedron 1993, 49, 4559; e) Inokuchi, T.; Kawaguchi, H.; Aoki, K.; Yoshida, A.; Torii, S. Bull. Chem. Soc. Jpn. 1994, 67, 595; f) Lesueur, C.; Nouguier, R.; Bertrand, M. P.; Hoffmann, P.; De Mesmaeker, A. Tetrahedron 1994, 50, 5369 and references cited therein; g) Cossy, J.; Ranaivosata, J.-L; Bellosta, V. Tetrahedron Lett. 1994, 35, 8161; h) Vaupel, A.; Knochel, P. Tetrahedron Lett. 1994, 35, 8349.
-
(1992)
Synlett
, pp. 743
-
-
Luebbers, T.1
Schaefer, H.J.2
-
11
-
-
0027168938
-
-
Furo[2,3b]pyran: a) Luebbers, T.; Schaefer, H. J. Synlett 1992, 743; b) Mellor, J. M.; Mohammed, S. Tetrahedron 1993, 49, 7557; c) Pandey, G.; Sesha Poleswara Rao, K.S.; Soma Sekhar, B. B. V. J. Chem. Soc., Chem. Commun., 1993, 1636; d) Hackmann, C.; Schaefer, H. J. Tetrahedron 1993, 49, 4559; e) Inokuchi, T.; Kawaguchi, H.; Aoki, K.; Yoshida, A.; Torii, S. Bull. Chem. Soc. Jpn. 1994, 67, 595; f) Lesueur, C.; Nouguier, R.; Bertrand, M. P.; Hoffmann, P.; De Mesmaeker, A. Tetrahedron 1994, 50, 5369 and references cited therein; g) Cossy, J.; Ranaivosata, J.-L; Bellosta, V. Tetrahedron Lett. 1994, 35, 8161; h) Vaupel, A.; Knochel, P. Tetrahedron Lett. 1994, 35, 8349.
-
(1993)
Tetrahedron
, vol.49
, pp. 7557
-
-
Mellor, J.M.1
Mohammed, S.2
-
12
-
-
0010471352
-
-
Furo[2,3b]pyran: a) Luebbers, T.; Schaefer, H. J. Synlett 1992, 743; b) Mellor, J. M.; Mohammed, S. Tetrahedron 1993, 49, 7557; c) Pandey, G.; Sesha Poleswara Rao, K.S.; Soma Sekhar, B. B. V. J. Chem. Soc., Chem. Commun., 1993, 1636; d) Hackmann, C.; Schaefer, H. J. Tetrahedron 1993, 49, 4559; e) Inokuchi, T.; Kawaguchi, H.; Aoki, K.; Yoshida, A.; Torii, S. Bull. Chem. Soc. Jpn. 1994, 67, 595; f) Lesueur, C.; Nouguier, R.; Bertrand, M. P.; Hoffmann, P.; De Mesmaeker, A. Tetrahedron 1994, 50, 5369 and references cited therein; g) Cossy, J.; Ranaivosata, J.-L; Bellosta, V. Tetrahedron Lett. 1994, 35, 8161; h) Vaupel, A.; Knochel, P. Tetrahedron Lett. 1994, 35, 8349.
-
(1993)
J. Chem. Soc., Chem. Commun.
, pp. 1636
-
-
Pandey, G.1
Sesha Poleswara Rao, K.S.2
Soma Sekhar, B.B.V.3
-
13
-
-
0027276964
-
-
Furo[2,3b]pyran: a) Luebbers, T.; Schaefer, H. J. Synlett 1992, 743; b) Mellor, J. M.; Mohammed, S. Tetrahedron 1993, 49, 7557; c) Pandey, G.; Sesha Poleswara Rao, K.S.; Soma Sekhar, B. B. V. J. Chem. Soc., Chem. Commun., 1993, 1636; d) Hackmann, C.; Schaefer, H. J. Tetrahedron 1993, 49, 4559; e) Inokuchi, T.; Kawaguchi, H.; Aoki, K.; Yoshida, A.; Torii, S. Bull. Chem. Soc. Jpn. 1994, 67, 595; f) Lesueur, C.; Nouguier, R.; Bertrand, M. P.; Hoffmann, P.; De Mesmaeker, A. Tetrahedron 1994, 50, 5369 and references cited therein; g) Cossy, J.; Ranaivosata, J.-L; Bellosta, V. Tetrahedron Lett. 1994, 35, 8161; h) Vaupel, A.; Knochel, P. Tetrahedron Lett. 1994, 35, 8349.
-
(1993)
Tetrahedron
, vol.49
, pp. 4559
-
-
Hackmann, C.1
Schaefer, H.J.2
-
14
-
-
0000995034
-
-
Furo[2,3b]pyran: a) Luebbers, T.; Schaefer, H. J. Synlett 1992, 743; b) Mellor, J. M.; Mohammed, S. Tetrahedron 1993, 49, 7557; c) Pandey, G.; Sesha Poleswara Rao, K.S.; Soma Sekhar, B. B. V. J. Chem. Soc., Chem. Commun., 1993, 1636; d) Hackmann, C.; Schaefer, H. J. Tetrahedron 1993, 49, 4559; e) Inokuchi, T.; Kawaguchi, H.; Aoki, K.; Yoshida, A.; Torii, S. Bull. Chem. Soc. Jpn. 1994, 67, 595; f) Lesueur, C.; Nouguier, R.; Bertrand, M. P.; Hoffmann, P.; De Mesmaeker, A. Tetrahedron 1994, 50, 5369 and references cited therein; g) Cossy, J.; Ranaivosata, J.-L; Bellosta, V. Tetrahedron Lett. 1994, 35, 8161; h) Vaupel, A.; Knochel, P. Tetrahedron Lett. 1994, 35, 8349.
-
(1994)
Bull. Chem. Soc. Jpn.
, vol.67
, pp. 595
-
-
Inokuchi, T.1
Kawaguchi, H.2
Aoki, K.3
Yoshida, A.4
Torii, S.5
-
15
-
-
0028285597
-
-
and references cited therein
-
Furo[2,3b]pyran: a) Luebbers, T.; Schaefer, H. J. Synlett 1992, 743; b) Mellor, J. M.; Mohammed, S. Tetrahedron 1993, 49, 7557; c) Pandey, G.; Sesha Poleswara Rao, K.S.; Soma Sekhar, B. B. V. J. Chem. Soc., Chem. Commun., 1993, 1636; d) Hackmann, C.; Schaefer, H. J. Tetrahedron 1993, 49, 4559; e) Inokuchi, T.; Kawaguchi, H.; Aoki, K.; Yoshida, A.; Torii, S. Bull. Chem. Soc. Jpn. 1994, 67, 595; f) Lesueur, C.; Nouguier, R.; Bertrand, M. P.; Hoffmann, P.; De Mesmaeker, A. Tetrahedron 1994, 50, 5369 and references cited therein; g) Cossy, J.; Ranaivosata, J.-L; Bellosta, V. Tetrahedron Lett. 1994, 35, 8161; h) Vaupel, A.; Knochel, P. Tetrahedron Lett. 1994, 35, 8349.
-
(1994)
Tetrahedron
, vol.50
, pp. 5369
-
-
Lesueur, C.1
Nouguier, R.2
Bertrand, M.P.3
Hoffmann, P.4
De Mesmaeker, A.5
-
16
-
-
0027942302
-
-
Furo[2,3b]pyran: a) Luebbers, T.; Schaefer, H. J. Synlett 1992, 743; b) Mellor, J. M.; Mohammed, S. Tetrahedron 1993, 49, 7557; c) Pandey, G.; Sesha Poleswara Rao, K.S.; Soma Sekhar, B. B. V. J. Chem. Soc., Chem. Commun., 1993, 1636; d) Hackmann, C.; Schaefer, H. J. Tetrahedron 1993, 49, 4559; e) Inokuchi, T.; Kawaguchi, H.; Aoki, K.; Yoshida, A.; Torii, S. Bull. Chem. Soc. Jpn. 1994, 67, 595; f) Lesueur, C.; Nouguier, R.; Bertrand, M. P.; Hoffmann, P.; De Mesmaeker, A. Tetrahedron 1994, 50, 5369 and references cited therein; g) Cossy, J.; Ranaivosata, J.-L; Bellosta, V. Tetrahedron Lett. 1994, 35, 8161; h) Vaupel, A.; Knochel, P. Tetrahedron Lett. 1994, 35, 8349.
-
(1994)
Tetrahedron Lett.
, vol.35
, pp. 8161
-
-
Cossy, J.1
Ranaivosata, J.-L.2
Bellosta, V.3
-
17
-
-
0027986915
-
-
Furo[2,3b]pyran: a) Luebbers, T.; Schaefer, H. J. Synlett 1992, 743; b) Mellor, J. M.; Mohammed, S. Tetrahedron 1993, 49, 7557; c) Pandey, G.; Sesha Poleswara Rao, K.S.; Soma Sekhar, B. B. V. J. Chem. Soc., Chem. Commun., 1993, 1636; d) Hackmann, C.; Schaefer, H. J. Tetrahedron 1993, 49, 4559; e) Inokuchi, T.; Kawaguchi, H.; Aoki, K.; Yoshida, A.; Torii, S. Bull. Chem. Soc. Jpn. 1994, 67, 595; f) Lesueur, C.; Nouguier, R.; Bertrand, M. P.; Hoffmann, P.; De Mesmaeker, A. Tetrahedron 1994, 50, 5369 and references cited therein; g) Cossy, J.; Ranaivosata, J.-L; Bellosta, V. Tetrahedron Lett. 1994, 35, 8161; h) Vaupel, A.; Knochel, P. Tetrahedron Lett. 1994, 35, 8349.
-
(1994)
Tetrahedron Lett.
, vol.35
, pp. 8349
-
-
Vaupel, A.1
Knochel, P.2
-
18
-
-
84989590341
-
-
Pyrano[2,3b]pyran: a) Tietze, L. F.; Schneider, C. Synlett, 1992, 755; b) Durand, R.; Geneste, P.; Joffre, J.; Moreau, C. Stud. Surf. Sci. Catal., 1993, 78, 647; c) Panek, J. S.; Sparks M. A. Tetrahedron Lett., 1989, 29, 4517; d) Hoffmann, R. W.; Giesen, V.; Fuest, M. Liebigs Ann. Chem., 1993, 629; e) Booma, C.; Balasubramanian, K. K. Tetrahedron Lett. 1993, 34, 6757.
-
(1992)
Synlett
, pp. 755
-
-
Tietze, L.F.1
Schneider, C.2
-
19
-
-
77956937529
-
-
Pyrano[2,3b]pyran: a) Tietze, L. F.; Schneider, C. Synlett, 1992, 755; b) Durand, R.; Geneste, P.; Joffre, J.; Moreau, C. Stud. Surf. Sci. Catal., 1993, 78, 647; c) Panek, J. S.; Sparks M. A. Tetrahedron Lett., 1989, 29, 4517; d) Hoffmann, R. W.; Giesen, V.; Fuest, M. Liebigs Ann. Chem., 1993, 629; e) Booma, C.; Balasubramanian, K. K. Tetrahedron Lett. 1993, 34, 6757.
-
(1993)
Stud. Surf. Sci. Catal.
, vol.78
, pp. 647
-
-
Durand, R.1
Geneste, P.2
Joffre, J.3
Moreau, C.4
-
20
-
-
0011283580
-
-
Pyrano[2,3b]pyran: a) Tietze, L. F.; Schneider, C. Synlett, 1992, 755; b) Durand, R.; Geneste, P.; Joffre, J.; Moreau, C. Stud. Surf. Sci. Catal., 1993, 78, 647; c) Panek, J. S.; Sparks M. A. Tetrahedron Lett., 1989, 29, 4517; d) Hoffmann, R. W.; Giesen, V.; Fuest, M. Liebigs Ann. Chem., 1993, 629; e) Booma, C.; Balasubramanian, K. K. Tetrahedron Lett. 1993, 34, 6757.
-
(1989)
Tetrahedron Lett.
, vol.29
, pp. 4517
-
-
Panek, J.S.1
Sparks, M.A.2
-
21
-
-
84986674614
-
-
Pyrano[2,3b]pyran: a) Tietze, L. F.; Schneider, C. Synlett, 1992, 755; b) Durand, R.; Geneste, P.; Joffre, J.; Moreau, C. Stud. Surf. Sci. Catal., 1993, 78, 647; c) Panek, J. S.; Sparks M. A. Tetrahedron Lett., 1989, 29, 4517; d) Hoffmann, R. W.; Giesen, V.; Fuest, M. Liebigs Ann. Chem., 1993, 629; e) Booma, C.; Balasubramanian, K. K. Tetrahedron Lett. 1993, 34, 6757.
-
(1993)
Liebigs Ann. Chem.
, pp. 629
-
-
Hoffmann, R.W.1
Giesen, V.2
Fuest, M.3
-
22
-
-
0027497005
-
-
Pyrano[2,3b]pyran: a) Tietze, L. F.; Schneider, C. Synlett, 1992, 755; b) Durand, R.; Geneste, P.; Joffre, J.; Moreau, C. Stud. Surf. Sci. Catal., 1993, 78, 647; c) Panek, J. S.; Sparks M. A. Tetrahedron Lett., 1989, 29, 4517; d) Hoffmann, R. W.; Giesen, V.; Fuest, M. Liebigs Ann. Chem., 1993, 629; e) Booma, C.; Balasubramanian, K. K. Tetrahedron Lett. 1993, 34, 6757.
-
(1993)
Tetrahedron Lett.
, vol.34
, pp. 6757
-
-
Booma, C.1
Balasubramanian, K.K.2
-
24
-
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1542422609
-
-
ref. 7a
-
b) ref. 7a.
-
-
-
-
25
-
-
1542527288
-
-
note
-
Conditions A, B or C (see Table) used even at increased temperature (140°C) left unchanged 2 (or 3d) with precipitation of metallic palladium and >90% recovered starting material.
-
-
-
-
26
-
-
0029121970
-
-
and references cited therein
-
No definitive mechanistic studies on this elementary step based on the generally accepted stereoelectronic necessity for syn Pd β-H elimination are known. Apparent trans β-H elimination have been reported, see: Friestad, G. K.; Branchaud, B.P. Tetrahedron Lett. 1995, 36, 7047 and references cited therein.
-
(1995)
Tetrahedron Lett.
, vol.36
, pp. 7047
-
-
Friestad, G.K.1
Branchaud, B.P.2
-
27
-
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0025034598
-
-
The lack of syn β-H to perform (a) an anion capture process or (b) an intramolecular Heck-type cross-coupling, in tandem with a Heck-type cyclization has been reported; a) Grigg, R.; Dorrity, M. J.; Malone, J. F.; Sridharan, V.; Sukirthalingham, S. Tetrahedron Lett. 1990, 31, 1343; b) Larock, R. C.; Lee, N. H. Tetrahedron Lett. 1991, 32, 5911.
-
(1990)
Tetrahedron Lett.
, vol.31
, pp. 1343
-
-
Grigg, R.1
Dorrity, M.J.2
Malone, J.F.3
Sridharan, V.4
Sukirthalingham, S.5
-
28
-
-
0026006753
-
-
The lack of syn β-H to perform (a) an anion capture process or (b) an intramolecular Heck-type cross-coupling, in tandem with a Heck-type cyclization has been reported; a) Grigg, R.; Dorrity, M. J.; Malone, J. F.; Sridharan, V.; Sukirthalingham, S. Tetrahedron Lett. 1990, 31, 1343; b) Larock, R. C.; Lee, N. H. Tetrahedron Lett. 1991, 32, 5911.
-
(1991)
Tetrahedron Lett.
, vol.32
, pp. 5911
-
-
Larock, R.C.1
Lee, N.H.2
-
29
-
-
1542527289
-
-
note
-
3: C, 71.54; H, 6.47. Found: C, 71.46; H, 6.52.
-
-
-
-
30
-
-
85087230240
-
-
note
-
2OH), Indicates that this hydrogen is axial thereby supporting the stereochemistry depicted as follows with increased stabilization of an axial anomeric C-O bond. The major isomer reveals H-2 (δ 3.38) as a ddd, J = 3.2, 7.1, and 9.7 Hz which supports a slightly distorted chair conformation for the pyranone moiety. (Equation Presented)
-
-
-
-
32
-
-
1542527281
-
-
note
-
Control experiments have shown that no epimerization at the anomeric carbon was observed under the reaction conditions for cyclization.
-
-
-
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