Organic Letters 2005-09-15

Cu(I)-catalyzed reductive aldol cyclizations: diastereo- and enantioselective synthesis of beta-hydroxylactones.

Hon Wai Lam, Pekka M Joensuu

Index: Org. Lett. 7 , 4225, (2005)

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Abstract

[reaction: see text] Copper bisphosphine complexes catalyze the intramolecular reductive aldol reaction of alpha,beta-unsaturated esters with ketones, affording five- and six-membered beta-hydroxylactones in high stereoselectivities. Utilization of chiral nonracemic bisphosphines render the cyclizations enantioselective.

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