-
1
-
-
33845185745
-
-
For an abbreviated list of leading references, see: (a) Ruggeri, R. B.; McClure, K. F.; Heathcock, C. H. J. Am. Chem. Soc. 1989, 11, 1530.
-
(1989)
J. Am. Chem. Soc.
, vol.11
, pp. 1530
-
-
Ruggeri, R.B.1
McClure, K.F.2
Heathcock, C.H.3
-
6
-
-
0021952743
-
-
(b) Williams, R. M.; Armstrong, R. W.; Dung, J. A. J. Am. Chem. Soc. 1985, 107, 3253.
-
(1985)
J. Am. Chem. Soc.
, vol.107
, pp. 3253
-
-
Williams, R.M.1
Armstrong, R.W.2
Dung, J.A.3
-
9
-
-
0000433901
-
-
Westling, M.; Smith, R.; Livinghouse, T. J. Org. Chem. 1986, 51, 1159.
-
(1986)
J. Org. Chem.
, vol.51
, pp. 1159
-
-
Westling, M.1
Smith, R.2
Livinghouse, T.3
-
12
-
-
0009649706
-
-
8b The reaction conditions employed in this early account were far harsher than necessary (benzene, reflux) and the product yields were presumably lowered as a consequence
-
8b The reaction conditions employed in this early account were far harsher than necessary (benzene, reflux) and the product yields were presumably lowered as a consequence.
-
-
-
-
14
-
-
0009636377
-
-
The greater reactivity of acyl bromides permits the desired insertion reactions to be conducted at temperatures as low as 0 °C. In some instances this characteristic has proven advantageous
-
The greater reactivity of acyl bromides permits the desired insertion reactions to be conducted at temperatures as low as 0 °C. In some instances this characteristic has proven advantageous.
-
-
-
-
15
-
-
0000267990
-
-
An elegant synthesis of the erythrinane skeleton which utilizes a thionium ion cyclization has been published. Tamura, Y.; Maeda, H.; Akai, S.; Ishibashi, H. Tetrahedron Lett. 1982, 23, 2209.
-
(1982)
Tetrahedron Lett.
, vol.23
, pp. 2209
-
-
Tamura, Y.1
Maeda, H.2
Akai, S.3
Ishibashi, H.4
-
18
-
-
0000469898
-
-
The failure of certain nonstabilized azomethine ylides to undergo internal [3 + 2] cycloadditions with nonactivated dipolarophiles has also been noted by others: (a) Padwa, A.; Haffmans, G.; Thomas, M. J. Org. Chem. 1984, 49, 3314.
-
(1984)
J. Org. Chem.
, vol.49
, pp. 3314
-
-
Padwa, A.1
Haffmans, G.2
Thomas, M.3
-
20
-
-
0000366322
-
-
and references therein
-
The successful utilization of "stabilized" azomethine ylides in intramolecular [3 + 2] cycloadditions has been described: Confalone, P. N.; Huie, E. M. J. Am. Chem. Soc. 1984, 106, 7175 and references therein.
-
(1984)
J. Am. Chem. Soc.
, vol.106
, pp. 7175
-
-
Confalone, P.N.1
Huie, E.M.2
-
21
-
-
33748738365
-
-
An alternative method for the pyrolytic generation of stabilized azomethine ylides has appeared. DeShong, P.; Kell, D. A.; Sidler, D. R. J. Org. Chem. 1985, 50, 2309.
-
(1985)
J. Org. Chem.
, vol.50
, pp. 2309
-
-
DeShong, P.1
Kell, D.A.2
Sidler, D.R.3
-
22
-
-
0002318163
-
-
Adams, R. Ed., John Wiley: New York
-
Whaley, W. M.; Govindachari, T. R. In "Organic Reactions"; Adams, R. Ed., John Wiley: New York, 1951, Vol. 6, p 74.
-
(1951)
Organic Reactions
, vol.6
, pp. 74
-
-
Whaley, W.M.1
Govindachari, T.R.2
-
23
-
-
0009638171
-
-
The cyclization of 2-(2-furyl)ethyl amides has been accomplished in low to moderate yield through the use of modified Bischler-Napieralski reaction conditions. Herz, W.; Tocker, S. J. Am. Chem. Soc. 1955, 77, 3554.
-
(1955)
J. Am. Chem. Soc.
, vol.77
, pp. 3554
-
-
Herz, W.1
Tocker, S.2
-
24
-
-
0009637243
-
-
The structure assigned to the erythrinane 10 was fully supported by proton decoupling experiments and nuclear Overhauser difference spectroscopy
-
The structure assigned to the erythrinane 10 was fully supported by proton decoupling experiments and nuclear Overhauser difference spectroscopy.
-
-
-
-
26
-
-
0026553354
-
-
Luedtke, G.; Westling, M.; Livinghouse, T. Tetrahedron 1992, 48, 2209.
-
(1992)
Tetrahedron
, vol.48
, pp. 2209
-
-
Luedtke, G.1
Westling, M.2
Livinghouse, T.3
-
29
-
-
0009610830
-
-
1H NMR in the presence of pyridine
-
1H NMR in the presence of pyridine.
-
-
-
-
30
-
-
0009593602
-
-
2Cl(1,2-DCE)
-
2Cl(1,2-DCE).
-
-
-
-
31
-
-
0009593753
-
-
Evidence for the existence of a trans-fused B, C ring junction in 40 was provided by 300-MHz NOE experiments. A definitive assignment awaits single crystal X-ray structure determination
-
Evidence for the existence of a trans-fused B, C ring junction in 40 was provided by 300-MHz NOE experiments. A definitive assignment awaits single crystal X-ray structure determination.
-
-
-
-
32
-
-
0026749040
-
-
Lee, C. H.; Westling, M.; Livinghouse, T.; Williams, A. C. J. Am. Chem. Soc. 1992, 114, 4089.
-
(1992)
J. Am. Chem. Soc.
, vol.114
, pp. 4089
-
-
Lee, C.H.1
Westling, M.2
Livinghouse, T.3
Williams, A.C.4
-
33
-
-
0009637246
-
-
(a) Inubushi, Y.; Sasaki, Y.; Tsuda, Y.; Yasui, B.; Konka, T.; Matsumoto, J.; Katarao, E.; Nakano, J. Tetrahedron, 1964, 20, 2007.
-
(1964)
Tetrahedron
, vol.20
, pp. 2007
-
-
Inubushi, Y.1
Sasaki, Y.2
Tsuda, Y.3
Yasui, B.4
Konka, T.5
Matsumoto, J.6
Katarao, E.7
Nakano, J.8
-
34
-
-
0013780327
-
-
(b) Inubushi, Y.; Sakaki, Y.; Tsuda, Y.; Nakano, J. Tetrahedron Lett. 1965, 1519.
-
(1965)
Tetrahedron Lett.
, pp. 1519
-
-
Inubushi, Y.1
Sakaki, Y.2
Tsuda, Y.3
Nakano, J.4
-
35
-
-
0009591259
-
-
The People's Health Sciences Publication Co.: Beijing, China
-
(a) China's Pharmacopeia; Part I; The People's Health Sciences Publication Co.: Beijing, China, 1977; p 145.
-
(1977)
China's Pharmacopeia
, Issue.PART I
, pp. 145
-
-
-
36
-
-
0009628620
-
-
Jiangsu Medical College; Shanghai Scientific Technology Press: Shanghai, China
-
(b) A Dictionary of Chinese Materia Medica; Jiangsu Medical College; Shanghai Scientific Technology Press: Shanghai, China, 1977; p 586.
-
(1977)
A Dictionary of Chinese Materia Medica
, pp. 586
-
-
-
39
-
-
0023608355
-
-
Akhita, M.; Botting, N. P.; Cohen, M. A.; Gani, D. Tetrahedron, 1987, 43, 5899.
-
(1987)
Tetrahedron
, vol.43
, pp. 5899
-
-
Akhita, M.1
Botting, N.P.2
Cohen, M.A.3
Gani, D.4
-
40
-
-
0009579718
-
-
20
-
20
-
-
-
-
42
-
-
0009579719
-
-
Brown, H. C.; Cha, J. S.; Nazer, B. Inorg. Chem. 1984, 23, 2929.
-
(1984)
Inorg. Chem.
, vol.23
, pp. 2929
-
-
Brown, H.C.1
Cha, J.S.2
Nazer, B.3
-
43
-
-
0009591566
-
-
34b was also examined as a reducing agent for the preparation of 42. In this instance 42 was produced along with its C-10 epimer in a ration of 93:7. In addition, the reaction was not amenable to scale up
-
34b was also examined as a reducing agent for the preparation of 42. In this instance 42 was produced along with its C-10 epimer in a ration of 93:7. In addition, the reaction was not amenable to scale up:
-
-
-
-
44
-
-
0001862747
-
-
(b) Palmisano, G.; Lesma, G.; Nali, M. ; Rindone, B.; Tollari, S. Synthesis 1985, 1072.
-
(1985)
Synthesis
, pp. 1072
-
-
Palmisano, G.1
Lesma, G.2
Nali, M.3
Rindone, B.4
Tollari, S.5
-
47
-
-
33845280002
-
-
Fevig, T. L.; Elliot, R. L.; Curran, D. P. J. Am. Chem. Soc. 1988, 110, 5064.
-
(1988)
J. Am. Chem. Soc.
, vol.110
, pp. 5064
-
-
Fevig, T.L.1
Elliot, R.L.2
Curran, D.P.3
-
51
-
-
0002851497
-
-
(b) Luche, J. L.; Rodrigues, H. L.; Cragge, P. J. Chem. Soc., Chem. Commun. 1978, 601.
-
(1978)
J. Chem. Soc., Chem. Commun.
, pp. 601
-
-
Luche, J.L.1
Rodrigues, H.L.2
Cragge, P.3
-
56
-
-
0020200919
-
-
(b) Yu, C.; Shen, W.; Han. J.; Chen Y.; Zhu, Y. Yaoxue Xuebao, 1982, 17, 795.
-
(1982)
Yaoxue Xuebao
, vol.17
, pp. 795
-
-
Yu, C.1
Shen, W.2
Han, J.3
Chen, Y.4
Zhu, Y.5
-
57
-
-
0016684685
-
-
(a) Harayama, T.; Ohtani, M.; Oki, M.; Inubushi, Y. Chem Pharm. Bull., 1975, 23, 1511;
-
(1975)
Chem Pharm. Bull.
, vol.23
, pp. 1511
-
-
Harayama, T.1
Ohtani, M.2
Oki, M.3
Inubushi, Y.4
-
58
-
-
0006161742
-
-
(b) Harayama, T.; Ohtani, M.; Oki, M.; Inubushi, Y. J. Chem. Soc., Chem. Commun. 1974, 827.
-
(1974)
J. Chem. Soc., Chem. Commun.
, pp. 827
-
-
Harayama, T.1
Ohtani, M.2
Oki, M.3
Inubushi, Y.4
-
59
-
-
0019164053
-
-
(a) Harayama, T.; Takatani, M.; Inubushi, Y. Chem. Pharm. Bull. 1980, 28, 2394;
-
(1980)
Chem. Pharm. Bull.
, vol.28
, pp. 2394
-
-
Harayama, T.1
Takatani, M.2
Inubushi, Y.3
-
60
-
-
0018628017
-
-
(b) Harayama, T.; Takatani, M.; Inubushi, Y. Tetrahedron Lett. 1979, 20, 4307.
-
(1979)
Tetrahedron Lett.
, vol.20
, pp. 4307
-
-
Harayama, T.1
Takatani, M.2
Inubushi, Y.3
-
61
-
-
85012628629
-
-
Inubushi, Y.; Ishii, H.; Harayama, T. Chem. Pharm. Bull. (Tokyo) 1967, 15, 250;
-
(1967)
Chem. Pharm. Bull. (Tokyo)
, vol.15
, pp. 250
-
-
Inubushi, Y.1
Ishii, H.2
Harayama, T.3
-
62
-
-
0009620680
-
-
S. W. Pelletier ed., John Wiley and Sons, New York
-
(b) Blumenkopf, T. A.; Heathcock, C. H. In The Alkaloids, S. W. Pelletier ed., John Wiley and Sons, New York, 1985, p 230.
-
(1985)
The Alkaloids
, pp. 230
-
-
Blumenkopf, T.A.1
Heathcock, C.H.2
-
63
-
-
37049077890
-
-
Ishibashi, H.; So, T. S.; Sato, T., Kurado, K.; Ikeda, M. J. Chem. Soc., Chem. Commun. 1989, 762.
-
(1989)
J. Chem. Soc., Chem. Commun.
, pp. 762
-
-
Ishibashi, H.1
So, T.S.2
Sato, T.3
Kurado, K.4
Ikeda, M.5
-
64
-
-
0009593603
-
-
The tricyclic imines 67d and 67e were found to undergo slow decomposition at room temperature but could be stored indefinitely in a benzene matrix under argon at -20 °C
-
The tricyclic imines 67d and 67e were found to undergo slow decomposition at room temperature but could be stored indefinitely in a benzene matrix under argon at -20 °C.
-
-
-
-
67
-
-
0009625457
-
-
13C NMR and GC-mass spectral analysis
-
13C NMR and GC-mass spectral analysis.
-
-
-
-
68
-
-
0009641855
-
-
The isonitrile 82 was prepared by the reaction of (2-chloroethylidene)cyclohexane with isocyanomethyllithium
-
The isonitrile 82 was prepared by the reaction of (2-chloroethylidene)cyclohexane with isocyanomethyllithium.
-
-
-
-
69
-
-
0009592312
-
-
53b to the corresponding amine [(i)
-
4 (74% overall)] followed by N-formylation-dehydration.
-
-
-
-
71
-
-
0009636382
-
-
Azabicyclo[3.3.1]nonane 86a was isolated from this mixture by careful chromatography on silica gel and was fully characterized
-
Azabicyclo[3.3.1]nonane 86a was isolated from this mixture by careful chromatography on silica gel and was fully characterized.
-
-
-
-
72
-
-
0009577581
-
-
The stereochemical disposition of the hydroxy group of 88 has not been determined
-
The stereochemical disposition of the hydroxy group of 88 has not been determined.
-
-
-
-
75
-
-
0002324898
-
-
Kende, A. S., Ed.; John Wiley and Sons; New York, Chapter 2
-
For a comprehensive account dealing with the synthetic utility of allylsilanes and related compounds see: The Electrophilic Substitution of Allylsilanes and Vinylsilanes. Fleming, I.; Dunogues, J; Smithers, R. in Organic Reactions, Kende, A. S., Ed.; John Wiley and Sons; New York, 1989, Vol. 37, Chapter 2, p 57.
-
(1989)
Organic Reactions
, vol.37
, pp. 57
-
-
Fleming, I.1
Dunogues, J.2
Smithers, R.3
-
76
-
-
0027752860
-
-
Several additional examples of stereocontrolled allylsilane-iminium ion cyclizations have appeared; (a) Heerding, D. A.; Hong, C. Y.; Kado, N.; Look, G. C.; Overman, L. E. J. Org. Chem. 1993, 58, 6947.
-
(1993)
J. Org. Chem.
, vol.58
, pp. 6947
-
-
Heerding, D.A.1
Hong, C.Y.2
Kado, N.3
Look, G.C.4
Overman, L.E.5
-
77
-
-
0027764253
-
-
(b) Hong, C. Y.; Kado, N.; Overman, L. E. J. Am. Chem. Soc. 1993, 115, 11028.
-
(1993)
J. Am. Chem. Soc.
, vol.115
, pp. 11028
-
-
Hong, C.Y.1
Kado, N.2
Overman, L.E.3
-
78
-
-
0000807645
-
-
(c) Hiemstra, H.; Forgens, H. P.; Speckamp, W. N. Tetrahedron Lett. 1985, 26, 3155.
-
(1985)
Tetrahedron Lett.
, vol.26
, pp. 3155
-
-
Hiemstra, H.1
Forgens, H.P.2
Speckamp, W.N.3
-
79
-
-
0000451179
-
-
(d) Hiemstra, H.; Sno, M. H. A. M.; Vijn, R. J.; Speckamp, W. N. J. Org. Chem. 1985, 50, 4014.
-
(1985)
J. Org. Chem.
, vol.50
, pp. 4014
-
-
Hiemstra, H.1
Sno, M.H.A.M.2
Vijn, R.J.3
Speckamp, W.N.4
-
80
-
-
0000457807
-
-
(a) Larsen, S. D.; Grieco, P. A.; Fobare, W. F. J. Am. Chem. Soc. 1986, 108, 3512;
-
(1986)
J. Am. Chem. Soc.
, vol.108
, pp. 3512
-
-
Larsen, S.D.1
Grieco, P.A.2
Fobare, W.F.3
-
82
-
-
0026604716
-
-
In contrast to allylsilanes, 2-propylidene-1,3-bis(silane)s have seen relatively little use in synthesis. For pertinent references concerning the use of these compounds as well as related methodology, see: (a) Rubiralt, M.; Diez, A.; Miguel, D. Syn. Commun. 1992, 22, 359.
-
(1992)
Syn. Commun.
, vol.22
, pp. 359
-
-
Rubiralt, M.1
Diez, A.2
Miguel, D.3
-
83
-
-
0001871074
-
-
(b) Guyot, B.; Pornet, J.; Miginiac, L. J. Organomet. Chem. 1990, 386, 19.
-
(1990)
J. Organomet. Chem.
, vol.386
, pp. 19
-
-
Guyot, B.1
Pornet, J.2
Miginiac, L.3
-
84
-
-
0025771936
-
-
(c) Guyot, B.; Pornet, J.; Miginiac, L. Tetrahedron 1991, 47, 3981.
-
(1991)
Tetrahedron
, vol.47
, pp. 3981
-
-
Guyot, B.1
Pornet, J.2
Miginiac, L.3
-
85
-
-
33748627892
-
-
An account addressing stereoselective cyclizations of allylsilanes with nitrilium ions generated by a Beckmann rearrangement has appeared, see: Schinzer, D.; Bo, Y. Angew. Chem., Int. Ed. Engl. 1991, 30, 687.
-
(1991)
Angew. Chem., Int. Ed. Engl.
, vol.30
, pp. 687
-
-
Schinzer, D.1
Bo, Y.2
-
86
-
-
0009620682
-
-
Danishefsky, S.; McKee, R.; Singh, R. K. J. Am. Chem. Soc. 1977, 99, 771.
-
(1977)
J. Am. Chem. Soc.
, vol.99
, pp. 771
-
-
Danishefsky, S.1
McKee, R.2
Singh, R.K.3
-
87
-
-
0002209617
-
-
Breslow, R., Ed.; John Wiley and Sons: New York
-
Krimen, L. I. in Organic Syntheses; Breslow, R., Ed.; John Wiley and Sons: New York, 1970; Vol. 50, p 1.
-
(1970)
Organic Syntheses
, vol.50
, pp. 1
-
-
Krimen, L.I.1
-
88
-
-
0000458209
-
-
For a recent review, see: Hoveyda, A. H.; Evans, D. A.; Fu, G. C. Chem. Rev. 1993, 93, 1307.
-
(1993)
Chem. Rev.
, vol.93
, pp. 1307
-
-
Hoveyda, A.H.1
Evans, D.A.2
Fu, G.C.3
-
89
-
-
0009593605
-
-
In contrast to the cis-pyrrolines, the only significant NOE enhancements that were observed upon irradiation of the C-4 and C-2 methine hydrogens in the minor trans isomers were to different hydrogens on the central C-3 methylene: (formula presented)
-
In contrast to the cis-pyrrolines, the only significant NOE enhancements that were observed upon irradiation of the C-4 and C-2 methine hydrogens in the minor trans isomers were to different hydrogens on the central C-3 methylene: (formula presented)
-
-
-
|