DBU-Mediated Mild and Chemoselective Deprotection of Aryl Silyl Ethers and Tandem Biaryl Ether Formation
作者:B. Kim、Chang-Eun Yeom、Hye Kim、So Lee
DOI:10.1055/s-2006-958425
日期:2007.1
selective cleavage of aryl silyl ethers is established using 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU). With either 1.0 or 0.10 equivalent of DBU, smooth desilylation of various aryl silyl ethers was accomplished selectively in the presence of alkyl silyl ethers and other base-sensitive groups such as acetate and ester. In addition, direct transformation of aryl silyl ethers into biaryl ethers using a catalytic
使用 1,8-二氮杂双环 [5.4.0] undec-7-ene (DBU) 建立了一种选择性裂解芳基甲硅烷基醚的有效方法。使用 1.0 或 0.10 当量的 DBU,在烷基甲硅烷基醚和其他碱敏感基团(如乙酸酯和酯)的存在下,可以选择性地完成各种芳基甲硅烷基醚的顺利脱甲硅烷基化。此外,通过串联脱甲硅烷基化和 SN Ar 与活化的芳基氟化物反应,可以使用催化量的 DBU 将芳基甲硅烷基醚直接转化为联芳基醚。