A Short Way to Esters of 1-Oxyl-2,2,5,5-Tetramethylpyrrolidine-3-carboxylic Acid by Favorski Rearrangement
作者:Gašper Marc、Slavko Pečar
DOI:10.1080/00397919508012662
日期:1995.4
Abstract The reaction of 3-bromo-4-oxo-l-oxyl-2,2,6,6-tetramethylpiperidine (1) with a solid sodium, alkoxide of primary or secondary alcohol provides a short way to prepare ester of 3-carboxy-1-oxyl-2,2,5,5-tetramethylpyrrolidine where the ring contraction from six (1) to five (6a-f) in a Favorski rearrangement occurs.
摘要 3-bromo-4-oxo-l-oxyl-2,2,6,6-四甲基哌啶 (1) 与固体伯醇或仲醇钠、醇盐的反应为制备 3-羧基酯提供了一条捷径。 -1-oxyl-2,2,5,5-四甲基吡咯烷,在 Favorski 重排中环从六 (1) 收缩到五 (6a-f)。