Rhodium-Catalyzed Reaction of Aryl- and Alkenylboronic Acids with 2,4-Dienoate Esters: Conjugate Addition and Heck Reaction Products
作者:Gabriela de la Herrán、Carmen Murcia、Aurelio G. Csákÿ
DOI:10.1021/ol0522485
日期:2005.12.1
[chemical reaction: see text]. We report herein the first examples of the addition of aryl- and alkenylboronicacids catalyzed by RhI complexes to 2,4-dienoate esters. Three different types of products have been obtained depending on the substitution pattern of the starting ester and the organoboronic acid: 1,6-conjugate addition products, 1,4-conjugate addition products, and Heck reaction products
Iron-catalyzed 1,6-addition of aryl Grignard reagents to 2,4-dienoates and -dienamides
作者:Kohki Fukuhara、Hirokazu Urabe
DOI:10.1016/j.tetlet.2004.11.131
日期:2005.1
1,6-Addition of aryl Grignardreagents to 2,4-dienoates or -dienamides was nicely catalyzed by iron salt to give 5-aryl-3-enoates or the corresponding amides in a highly regio- and stereoselective manner.