Selective Halogen−Lithium Exchange Reaction of Bromine-Substituted 25,26,27,28-Tetrapropoxycalix[4]arene
作者:Mogens Larsen、Mikkel Jørgensen
DOI:10.1021/jo9609440
日期:1996.1.1
Methods are described for the selective bromine-lithium exchange reaction of bromine-substituted calix[4]arenes with either n-BuLi or t-BuLi in THF. Quenching of the lithiated calix[4]arenes with MeOH, D(2)O, CH(3)SSCH(3), B(OCH(3))(3), DMF, or CO(2) as electrophiles resulted in 5-monosubstituted, 5,17-disubstituted, or 5,11,17,23-tetrasubstituted calix[4]arenes with H, D, SCH(3), B(OH)(2), CHO, or
描述了在THF中将溴取代的杯[4]芳烃与n-BuLi或t-BuLi进行选择性溴-锂交换反应的方法。用甲醇,D(2)O,CH(3)SSCH(3),B(OCH(3))(3),DMF或CO(2)作为亲电子试剂对锂化杯[4]芳烃进行淬灭具有H,D,SCH(3),B(OH)(2),CHO或COOH官能团的-单取代,5,17-二取代或5,11,17,23-四取代的杯[4]芳烃。