作者:Christophe Bénard、Rahim Mohammad、Neerja Saraswat、Rudong Shan、Samarendra N. Maiti、Peter G. M. Wuts、Michael Stier、Teresa Lints、James Bradow、Jacob B. Schwarz
DOI:10.1080/00397910701796691
日期:2008.1.1
Abstract Chiral 3‐methanesulfonyl‐1‐Boc‐pyrrolidine and piperidine were reacted with sodium phenolates, resulting in a mixture of displacement and elimination products. Following carbamate deprotection and pH adjustment, the 3‐pyrroline and tetrahydropyridine by‐products resulting from elimination were easily removed through aqueous partitioning and/or concentration. Although the pyrrolidines were
摘要 手性 3-甲磺酰基-1-Boc-吡咯烷和哌啶与苯酚钠反应,产生置换和消除产物的混合物。在氨基甲酸酯脱保护和 pH 调节后,消除产生的 3-吡咯啉和四氢吡啶副产物很容易通过水分配和/或浓缩去除。尽管形成的吡咯烷具有高度的光学纯度,但在哌啶的情况下观察到轻微的外消旋化,因为需要升高的温度来实现置换。