Palladium-catalyzed regiospecific tandem allylation of 2-aminophenols using 2-butene-1,4-diol
摘要:
The direct activation of C-O bonds in 2-butene-1,4-diol by palladium complexes has been accelerated by carrying out the reactions in the presence of a titanium reagent. Palladium-catalyzed regiospecific tandem allylation of 2-aminophenols with 2-butene-1,4-diol leads to 3,4-dihydro-2-vinyl-2H-1,4-benzoxazines. (C) 2004 Elsevier Ltd. All rights reserved.