An unusual regioselectivity in the Pd-catalyzed cross coupling of alkynes. A correction
摘要:
Palladium catalyzed additions of terminal alkynes to alkynoates can lead from preferential to exclusive C-C bond formation at the alpha -carbon and, in the case of ethyl 3-dimethylphenylsilylpropiolate. complete selectivity for alpha -attack, an unprecedented regioselectivity that requires revision of the earlier assignment of regioselectivity. (C) 2001 Elsevier Science Ltd. All rights reserved.