SelectiveN(1)-arylation of benzotriazole with activated aryl halides under conditions of phase transfer catalysis
作者:I. P. Beletskaya、D. V. Davydov、M. S. Gorovoi、S. V. Kardashov
DOI:10.1007/bf02496407
日期:1999.8
3-benzotriazole, with activated aryl halides in a medium of aromatichydrocarbons under conditions of phase transfer catalysis with the use of inorganic bases and cetyltrimethylammonium bromide as a phase-transfer catalyst was studied. Arylation affords bothN(1)- andN(2)-arylation products. Their ratio depends on the nature of the base and the reactivity of the arylating agent. In the presence of catalytic
Regioselective reaction of 1,2,3-benzotriazole (BtH) with pentafluorobenzene derivatives under base conditions was investigated and its regioselectivity strongly depends on solvent, base, and electron-withdrawing group at 4-position on the perfluorophenyl ring. Several Bt(N1)-substituted perfluorobenzenes were prepared by using this method. (C) 2010 Elsevier Ltd. All rights reserved.