Regio- and stereoselective addition of carboxylic acids to phenylacetylene catalyzed by cyclopentadienyl ruthenium complexes
摘要:
The direct addition of carboxylic acids to terminal alkynes Such as phenylacetylene in the presence of catalytic amount of [CpRu(CO)(2)CI] (1) or [{CpRu(CO)(2)}(2)] (2) affords the anti-Markovnikov adducts with high selectivity. In most instances, the E-enol esters are the major products. (c) 2005 Elsevier B.V. All rights reserved.