Fluoride-Promoted Rearrangement of Organo Silicon Compounds: A New Synthesis of 2-(Arylmethyl)aldehydes from 1-Alkynes
作者:Laura Antonella Aronica、Patrizio Raffa、Anna Maria Caporusso、Piero Salvadori
DOI:10.1021/jo0351062
日期:2003.11.1
A new approach to 2-(arylmethyl)aldehydes 4 based upon a 1,2-anionotropic rearrangement of an aryl group is presented. The synthetic sequence begins with a silylformylation reaction of terminal acetylenes 5 with aryl and heteroaryl silanes 6, followed by treatment of the products (Z)-1 with TBAF. The optimization of the experimental conditions of the fluoride-promoted step is described, together with
提出了基于芳基的1,2-阴离子重排的2-(芳基甲基)醛4的新方法。合成序列开始于末端乙炔5与芳基和杂芳基硅烷6的甲硅烷基甲酰化反应,然后用TBAF处理产物(Z)-1。描述了氟化物促进步骤的实验条件的优化,以及该方法的合成潜力。据报道,重排反应的可能机制表明氟离子被添加到β-甲硅烷基烯醛(Z)-1的芳基硅部分,随后芳基迁移到相邻的碳原子上。芳基和杂芳基取代基都可以重新排列而没有任何构型损失。