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鄢明, Michael P. Doyle, * Ming Yan, Wenhao Hu, and Luisa S. Gronenberg
J. AM. CHEM. SOC. 2003, 125, 4692-4693,-0001,():
-1年11月30日
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鄢明, Ming Yan and Albert S. C. Chan *
Tetrahedron Letters 40(1999)6645-6648,-0001,():
-1年11月30日
A series of C2-symmetric aryl diphosphites based on chiral binaphthol were prepared and their copper complexes were found to be efficient catalysts for the conjugate addition of diethylzinc to cyclic enones. Good enantioselectivities (up to 89.8 and 88.7% ee, respectively) were obtained in the conjugate addition of diethylzinc to 2-cyclohexenonc and 2-cyclopcntenone.
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鄢明, Ming Yan, Zhong-Yuan Zhou and Albert S. C. Chan*
Chem. Commun., 2000, 115-116,-0001,():
-1年11月30日
Highly enantioselective conjugate addition of diethylzinc to a, β-unsaturated lactones was achieved by using chiral diphosphite-copper catalysts; the structure of a chiral diphosphite-copper (I) catalyst was determined by single crystal X-ray diffraction.
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