Carbanion-induced base-catalyzed synthesis of unsymmetrical biaryls from suitably functionalized 2H-pyran-2-ones through ring-transformation reactions
作者:Vishnu Ji Ram、Nidhi Agarwal
DOI:10.1016/s0040-4039(01)01481-2
日期:2001.10
of unsymmetrical highly functionalized biaryls with an amino substituent juxtaposed with two nitrile groups in one of the phenyl rings is delineated and illustrated by the carbanion-induced ring-transformation of 6-aryl-4-methylsulfanyl-2H-pyran-2-one-3-carbonitrile (1) and 4-sec-amino-6-aryl-2H-pyran-2-one-3-carbonitrile (2) to 2-amino-4-aryl-6-methylsulfanyl-1,3-benzodinitrile (3) and 2-amino-6-sec-amino-4-aryl-1
由碳芳基引起的6-芳基-4-甲基硫烷基-2 H-吡喃-2-基的碳负离子诱导的环化描述并说明了不对称的高度官能化的联芳基的合成,该氨基取代基与一个苯环中的两个腈基并置。1-3-甲腈(1)和4 - sec-氨基-6-芳基-2 H-吡喃-2-one-3-腈(2)变成2-氨基-4-芳基-6-甲基硫烷基-1,3 -使用苯丙二腈作为碳负离子源的2-苯并二腈(3)和2-氨基-6-仲-氨基-4-芳基-1,3-苯并二腈(4),产率中等。