Tetrahedron letters

Dichloroborane–dioxane: an exceptional reagent for the preparation of alkenyl-and alkylboronic acids

KVB Josyula, P Gao, C Hewitt

Index: Josyula, Kanth V. B.; Gao, Peng; Hewitt, Chris Tetrahedron Letters, 2003 , vol. 44, # 42 p. 7789 - 7792

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Citation Number: 11

Abstract

Terminal alkynes and alkenes were conveniently hydroborated to the corresponding alkenyl- and alkyldichloroboranes using dichloroborane–dioxane in dichloromethane. These dichloroboranes were hydrolyzed by water to the corresponding alkenyl-and alkylboronic acids in moderate to good yields. With terminal alkenes and alkynes boron was predominantly attached to terminal carbon. Alkynes gave exclusively trans-vinylboronic ...