Direct Synthesis of Alkenyl Boronic Esters from Unfunctionalized Alkenes: A Boryl-Heck Reaction
作者:William B. Reid、Jesse J. Spillane、Sarah B. Krause、Donald A. Watson
DOI:10.1021/jacs.6b02914
日期:2016.5.4
example of a boryl-Heck reaction using an electrophilic boron reagent. This palladium-catalyzed process allows for the conversion of terminal alkenes to trans-alkenyl boronic esters using commercially available catecholchloroborane (catBCl). In situ transesterification allows for rapid access to a variety of boronic esters, amides, and other alkenyl boron adducts.
Enol Silyl Ethers via Copper(II)-Catalyzed C–O Bond Formation
作者:Daniel G. Chan、David J. Winternheimer、Craig A. Merlic
DOI:10.1021/ol2009297
日期:2011.5.20
Copper(II) acetate catalyzes the coupling of pinacol vinylboronates with silanols producing enol silyl ethers. This represents a novel enol silyl ether synthesis via formation of the C–O bond instead of the conventional Si–O bond. This also constitutes the first transition-metal-catalyzed oxidative cross-coupling with silanols.