Reductive Cleavage of Benzannelated Cyclic Ethers and Amines: Synthetic Applications
作者:Ugo Azzena、Salvatore Demartis、Luciano Pilo、Elisabetta Piras
DOI:10.1016/s0040-4020(00)00783-3
日期:2000.10
Reduction of symmetrical intramolecular diarylmethyl ethers (3a and 8a) and amines (3b and 8b) with alkali metals in THF allows the generation of unsymmetrical oxy- or amino-functionalised arylmethyl organometallics. Such intermediates were successfully trapped with various electrophiles, allowing a new access to unsymmetrically 2,2′-disubstituted-1,1′-biaryls (5aa–5bf) and 1,8-disubstituted naphthalenes
在THF中用碱金属还原对称的分子内二芳基甲基醚(3a和8a)和胺(3b和8b)可以生成不对称的经氧或氨基官能化的芳基甲基有机金属。这样的中间体被成功捕获与各种亲电子,允许不对称2,2'-二取代-1,1'-联芳基(一个新的访问5AA - 5BF)和1,8-二取代的萘(10AA - 10BE)。