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发布时间：2019-03-09

论文类型：期刊论文

发表时间：2013-11-15

发表刊物：JOURNAL OF ORGANOMETALLIC CHEMISTRY

收录刊物：Scopus、EI、SCIE

卷号：745

页面范围：177-185

ISSN号：0022-328X

关键字：Regioselective control; Catalyst switch; 2-(Bromomethylnaphthalene; Arylethylidene malononitrile; Allyltributylstannane

摘要：Regioselective control by a catalyst switch in palladium-catalyzed benzylallylation of arylethylidene malononitriles (alpha-benzyl-beta-allylation versus alpha-allyl-beta-benzylation) is described. The three-component reaction of 2-(bromomethyl)naphthalenes, arylethylidene malononitriles, and allyltributylstannane proceeds smoothly with palladium nanoparticles as a catalyst to provide a-benzyl-b-allylation products in good yields. The regioselectivity of the benzylallylation reaction is completely overturned with Pd(PPh3)(4) as the catalyst instead of palladium nanoparticles to obtain alpha-allyl-beta-benzylation products in moderate to good yields. (C) 2013 Elsevier B.V. All rights reserved.