作者:A.E. Wróblewski
DOI:10.1016/s0040-4020(01)88692-0
日期:1983.1
with either MeONa/MeOH or HCl/MeOH solutions. Triethylamine catalyzed cyclisation of 6 led to a 15:85 mixture of 1A and 1B. The cis relationship of the OH and P=O groups in 1A and 7A was established by 1H and 13CNMR spectra. Predominant conformations of 1A and 1B and their derivatives were deduced from 3JHCCP and 3JCCOP coupling constants. A possible mechanism of the transformations described in the paper
首次获得标题化合物的非对映异构体1A和1B以及开环产物6。在甲醇钠的甲醇溶液中平衡纯1A和1B,得到1A和1B的45:55混合物。用MeONa / MeOH或HCl / MeOH溶液从6生成相同的混合物。三乙胺催化的6环化反应生成15:85的1A和1B混合物。1A和7A中OH和P = O基团的顺式关系由1建立1 H和13 CNMR光谱。从3 J HCCP和3 J CCOP耦合常数推导1A和1B及其衍生物的主要构象。本文讨论了一种可能的转换机制。