Synthesis of Unsymmetrical Polysubstituted Pyridines from β-Sulfonylvinylamines via 1-Aza-Allyl Anion Intermediates
作者:Mark Lautens、Chan Lau、Gavin Tsui
DOI:10.1055/s-0031-1289578
日期:2011.12
A modular synthesis of highly functionalized unsymmetricalpyridines has been developed from reacting β-sulfonylvinylamines with α,β-unsaturated systems in the presence of base via the formation of 1-aza-allyl anion intermediates. β-sulfonylvinylamines - 2,4,6-triarylpyridines - 1-aza-allyl anions - α,β-unsaturated ketones - cascade reactions
A new and convenient one-pot solid supported synthesis of 2,4,6-triarylpyridines
作者:Anil Kumar、Summon Koul、Tej K. Razdan、Kamal K. Kapoor
DOI:10.1016/j.tetlet.2005.11.043
日期:2006.1
A new, convenient, efficient and cost-effective one-pot solid supported synthesis of 2,4,6-triarylpyridines from benzylideneacetophenones and urea, thiourea or their derivatives, using Bi(III) nitrate–Al2O3 is described. The reaction seems to proceed via β-oxygenation of Bi(III)-enolized benzylideneacetophenone followed by Michael addition, heteroannulation with simultaneous retro aldol disproportionation
描述了一种新的,方便,有效且具有成本效益的一锅固支持的硝酸Bi(III)-Al 2 O 3,由亚苄基苯乙酮和尿素,硫脲或其衍生物合成2,4,6-三芳基吡啶。该反应似乎是通过对Bi(III)烯丙基化的亚苄基苯乙酮进行β加氧,然后进行迈克尔加成,同时同时逆向羟醛歧化和随后的催化氧化和脱水而进行的。
Tewari, R. S.; Dubey, A. K., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 2, p. 153 - 154
作者:Tewari, R. S.、Dubey, A. K.
DOI:——
日期:——
Synthesis of 2,4,6-triarylpyridines using phenacylidenedimethylsulfuranes
作者:Komal C. Gupta、Pankaj K. Pathak、Brijesh K. Saxena、Nirupma Srivastava、Kalpna Pandey
DOI:10.1021/je00047a040
日期:1987.1
Malik, Saroj; Tewari, R. S.; Srivastava, N., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1982, vol. 21, p. 242 - 243
作者:Malik, Saroj、Tewari, R. S.、Srivastava, N.、Nigam, R. K.、Gupta, K. C.