Asymmetric β-Boration of α,β-Unsaturated Esters with Chiral (NHC)Cu Catalysts

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• 作者：Vanesa Lillo ; Auxiliadora Prieto ; Amadeu Bonet ; M. Mar Daz-Requejo ; Jess Ramrez ; Pedro J. Prez ; Elena Fernndez
• 刊名：Organometallics
• 出版年：2009
• 出版时间：January 26, 2009
• 年：2009
• 卷：28
• 期：2
• 页码：659-662
• 全文大小：164K
• 年卷期：v.28,no.2(January 26, 2009)
• ISSN：1520-6041

文摘

Copper complexes containing chiral N-heterocyclic carbene ligands catalyze the regioselective nucleophilic boryl attack at the β-carbon of α,β-unsaturated esters with enantioselectivities up to 74% ee, depending on the nature of the ester group.