A general method for the synthesis of enantiopure aliphatic chain alcohols with established absolute configurations. Part 1. Application of the MαNP acid method to acetylene alcohols
作者:Yoko Yamamoto、Megumi Akagi、Kumiko Shimanuki、Shunsuke Kuwahara、Masataka Watanabe、Nobuyuki Harada
DOI:10.1016/j.tetasy.2014.10.007
日期:2014.11
applied to various acetylene alcohols 4–12 and 14. In the case of MαNP esters 21b, 24a, and 26a, their absolute configurations were unambiguously determined by X-ray crystallography, which confirmed the absolute configuration assignments performed by 1H NMR anisotropy. These acetylene alcohol MαNP esters can serve as key intermediates for the synthesis of enantiopure aliphatic chain alcohols with established
使用(A方法小号(+) - - )2-甲氧基-2-(1-萘基)丙酸1(MαNP酸)已经施加到炔属醇4 - 14由以确定它们的绝对构型1个1 H NMR各向异性和/或X射线晶体学。从外消旋乙炔醇和(非对映体制备酯MαNP小号(+) - - )MαNP酸1是易于分离的,通过HPLC在硅胶上。从1 1 H NMR各向异性Δ δ分离非对映体MαNP酯Δ数据δ = δ([R ,X) - δ(小号,X)= δ(第二FR) - δ(第一FR)},第一洗脱酯的绝对构型进行测定。此MαNP酸方法已成功地应用于各种乙炔醇4 - 12和14。在MαNP酯的情况下21B,24A,和26A,它们的绝对构型通过明确地X射线晶体学,这证实所执行的绝对构型确定分配11 H NMR各向异性。这些炔属醇MαNP酯可以如在本系列的第2部分中描述作为对映体纯的脂肪族链醇既定绝对构型的合成的关键中间体。