Molander GA, McKee SA. Copper-catalyzed β-boration of α,β-unsaturated carbonyl compounds with tetrahydroxydiborane.
Org Lett 2011;
13:4684-7. [PMID:
21819097 PMCID:
PMC3162992 DOI:
10.1021/ol201900d]
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Abstract
The copper-catalyzed β-boration of α,β-unsaturated carbonyl compounds with tetrahydroxydiborane has been developed. This diboron reagent allows direct, efficient access to boronic acids and their derivatives. Primary, secondary, and tertiary α,β-unsaturated amides are converted to the corresponding β-trifluoroboratoamides in good to excellent yields. The β-boration of a variety of α,β-unsaturated esters and ketones is also reported.
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