Deuterioaldehydes, essential precursors In the preparation of chiral primary deuterioalcohols, have been prepared in yields ranging from 55–75% via reduction of methyl and ethyl esters at -78°C with diisobutylaluminun deuterlde (DIBAL-D). The stoichiometry of the DIBAL-D reduction and the time of the reduction were varied depending upon the structure of the reactant. Aliphatic esters were reduced in
氘代醛,必不可少的前体在手性一级
氘代醇的制备中,通过在-78°C下用
二异丁基铝
氘化
氘(D
IBAL-D)还原甲基和乙基酯,可以制备55-75%的产率。D
IBAL-D还原的
化学计量和还原时间根据反应物的结构而变化。脂肪酯在6-10分钟内减少。在-78℃下,同时芳族酯反应1小时。在-78°C下。使用1.0至1.S当量的D
IBAL-D还原简单的单官能酯,而多官能酯则需要2.0至2.5当量的D
IBAL-D。