Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 130, Issue 5, Pages 1576-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja710540s
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Rhodium-catalyzed asymmetric conjugate alkynylation of alpha beta-unsaturated ketones giving beta-alkynylketones took place in high yields with high enantioselectivity. The reaction was realized by use of (trisopropylsilyl) acetylene combined with (R)-DTBM-segphos as a chiral phosphine ligand, where the sterically bulky substitutents on the silicon and phosphorous atoms suppress the alkyne dimerization.
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