Organocatalytic Domino Michael-Aldol Reaction of Ketones and α,β-Unsaturated Trifluoromethyl Ketones
作者:Jin-Tao Liu、Xiao-Jin Wang、Yan Zhao
DOI:10.1055/s-0028-1083255
日期:2008.12
Pyrrolidine-catalyzed domino Michael-aldol reactionof α,β-unsaturated trifluoromethylketones andketones was achieved under mild conditions; β-hydroxy-β-trifluoromethylcyclohexanones were obtained in high yields with good diastereoselectivities.
Regiospecific Organocatalytic Asymmetric Aldol Reaction of Methyl Ketones and α,β-Unsaturated Trifluoromethyl Ketones
作者:Xiao-Jin Wang、Yan Zhao、Jin-Tao Liu
DOI:10.1021/ol070217z
日期:2007.3.1
[structure: see text]. The aldol reaction of methylketones and alpha,beta-unsaturated trifluoromethyl ketones occurred under mild conditions with the combination of proline-derived N-sulfonylamide and trifluoroacetic acid as the catalyst to give the corresponding unsaturated alpha-trifluoromethyl tertiary alcohols in high yields with good enatioselectivities.
Organocatalyzed Asymmetric Inverse-Electron-Demand Hetero-Diels-Alder Reaction of α,β-Unsaturated Trifluoromethyl Ketones and Aldehydes
作者:Jin-Tao Liu、Yan Zhao、Xiao-Jin Wang
DOI:10.1055/s-2008-1042920
日期:——
The inverse-electron-demand hetero-Diels-Alderreaction of aldehydes and α,β-unsaturated trifluoromethyl ketones occurred under mild conditions using a chiral diphenylprolinol silyl ether as the catalyst. After subsequent chemical transformations, the corresponding 6-trifluoromethyl-3,4-dihydropyan-2-ones were obtained in good enantioselectivities.