Transition-Metal-Free Poly(thiazolium) Iodide/1,8-Diazabicyclo[5.4.0]undec-7-ene/Phenazine-Catalyzed Esterification of Aldehydes with Alcohols
作者:Supill Chun、Young Keun Chung
DOI:10.1021/acs.orglett.7b01617
日期:2017.7.21
Poly(3,4-dimethyl-5-vinylthiazolium) iodide was used as a polymer precatalyst in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and phenazine for the oxidative esterification of aldehydes with alcohols. Selective functionalization of OH groups was achieved in the presence of NH2 groups. The poly(thiazolium) iodide/DBU/phenazine system exhibited excellent catalytic activity and could be reused
在1,8-二氮杂双环[5.4.0]十一碳-7-烯(DBU)和吩嗪的存在下,将聚(3,4-二甲基-5-乙烯基噻唑鎓)碘化物用作聚合物预催化剂,用于醛的氧化酯化反应。酒精。在NH 2基团的存在下实现了OH基团的选择性官能化。聚噻唑鎓碘化物/ DBU /吩嗪系统表现出优异的催化活性,可以重复使用五次而不会失去活性。