作者:Tim Hellenbrand、Klaus T. Wanner
DOI:10.1002/ejoc.201402259
日期:2014.7
The synthesis of 4-substituted piperidine-3-carboxylates was achieved by conjugate addition of organomagnesium cuprates to N-methyl and N-tert-butoxycarbonyl guvacine derivatives. Good to excellent yields were obtained with primary Grignard reagents containing alkyl, alkenyl, alkynyl, or masked aldehyde groups in a copper(I)-trimethylsilylacetylide-catalysed and chlorotrimethylsilane (TMSCl) mediated
4-取代哌啶-3-羧酸盐的合成是通过有机镁铜酸盐与 N-甲基和 N-叔丁氧羰基番石榴碱衍生物的共轭加成来实现的。在铜 (I)-三甲基甲硅烷基乙炔化物催化和三甲基氯硅烷 (TMSCl) 介导的过程中,使用含有烷基、烯基、炔基或掩蔽醛基的主要格氏试剂获得了良好到极好的收率。