A new synthesis of 2-substituted benzofurans and benzothiophens: Novel fragmentation reactions of simple alkyl groups
作者:R.Alan Aitken、Graham Burns
DOI:10.1016/s0040-4039(00)96366-4
日期:1987.1
Flash vacuum pyrolysis of (2-methoxy- and (2-methylthiobenzoyl)alkylidenetriphenylphosphoranes results in loss of Ph3PO and methyl radical; cyclisation of the resulting radical intermediates leads to benzofurans and benzothiophens in which the 2-substituents have undergone novel fragmentation processes.
(2-甲氧基-和(2-甲基
硫代苯甲酰基)亚烷基三苯基
苯基膦的快速真空热解导致Ph 3 PO和
甲基自由基的损失;所得自由基中间体的环化导致
苯并呋喃和
苯并噻吩中的2-取代基经历了新的裂解过程。