A One-Pot Synthesis of Doubly Unsaturated Trifluoromethyl Amines:Easy Access to CF<sub>3</sub>-Substituted Piperidines
作者:Guillaume Magueur、Julien Legros、Franck Meyer、Michèle Ourévitch、Benoit Crousse、Danièle Bonnet-Delpon
DOI:10.1002/ejoc.200400719
日期:2005.4
A straightforward route to trifluoromethyl analogs of piperidines is described. These syntheses involve a Barbier-type allylation reaction of trifluoroacetaldimines, followed by N-allylation (one-pot), and ring-closing metathesis. An efficient asymmetric version is also reported (>98 % de). Functionalized heterobicyclic compounds can also be obtained by a Pauson–Khand reaction. (© Wiley-VCH Verlag
描述了哌啶三氟甲基类似物的直接途径。这些合成涉及三氟乙醛亚胺的 Barbier 型烯丙基化反应,然后是 N-烯丙基化(一锅法)和闭环复分解。还报告了有效的非对称版本 (>98% de)。功能化的杂双环化合物也可以通过 Pauson-Khand 反应获得。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)