A Versatile Indium Trichloride Mediated Prins-Type Reaction to Unsaturated Heterocycles
作者:Adrian P. Dobbs、Sebastien J. J. Guesné、Saša Martinović、Simon J. Coles、Michael B. Hursthouse
DOI:10.1021/jo034981k
日期:2003.10.1
A versatile and high-yielding indium trichloride mediated cyclization reaction of silylated homoallylic alcohols, thiols, or amines with aldehydes or epoxides is described as a rapid route to a range of unsaturated heterocycles. The excellent diastereoselectivity observed offers a method of wide scope and generality.
The silyl-Prins and aza-silyl-Prins reactions have been employed for the preparation of 6-CF3-substituted dihydropyrans and 6-CF3-substituted tetrahydropyridines. The product heterocycles have been further elaborated to a number of products, including CF3-substituted pipecolates and hydroxylated pyrans and piperidines. (C) 2007 Elsevier Ltd. All rights reserved.
Rapid Access to<i>trans</i>-2,6-Disubstituted Piperidines: Expedient Total Syntheses of (-)-Solenopsin A and (+)-<i>epi</i>-Dihydropinidine
作者:Adrian P. Dobbs、Sebastien J. Guesné
DOI:10.1055/s-2005-871956
日期:——
Expedient syntheses of (-)-solenopsin A and (+)-epi-dihydropinidine are reported, the key step in both being the one-pot multicomponent aza-silyl-Prins condensation reaction to yield a trans dihydropyridine.
报告了 (-)-solenopsin A 和 (+)-epi-dihydropinidine 的便捷合成,二者的关键步骤都是一锅多组分氮-硅-Prins缩合反应,以生成反式二氢吡啶。
The Aza-Silyl-Prins Reaction: A Novel Method for the Synthesis of<i>Trans-</i>2,6-Tetrahydropyridines
作者:Adrian P. Dobbs、Sebastien J. Guesné、Michael B. Hursthouse、Simon J. Coles
DOI:10.1055/s-2003-41434
日期:——
Reaction of 4-trimethylsilyl-3-butenyl-1-amines with aldehydes under mild Lewis acid conditions gives substituted tetrahydropyridines in excellent yields and with excellent trans diastereoselectivity.