Improved Practical Asymmetric Synthesis of α-Alkylmandelic Acids Utilizing Highly Diastereoselective Alkylation of 5-Aryl-2-(1-naphthyl)-1,3-dioxolan-4-ones
作者:Tomonori Misaki、Satoko Ureshino、Ryohei Nagase、Yumiko Oguni、Yoo Tanabe
DOI:10.1021/op050263j
日期:2006.5.1
A practical method for the synthesis of optically pure α-alkylmandelic acids 1 is described. The present improved robust method involved two reactions: a mild, convenient, stereoselective preparation of chiral cis-5-aryl-2-(1-naphthyl)-1,3-dioxolan-4-ones, 9a−c, and highly diastereoselective alkylation of 9a−c, followed by the hydrolysis.
描述了合成光学纯的α-烷基扁桃酸1的实用方法。本改进的稳健方法涉及两个反应:手性顺式-5-芳基-2-(1-萘基)-1,3-二氧戊环-4-酮,9a - c的温和,便捷,立体选择性制备和高度非对映选择性烷基化的图9a - ç,接着水解。