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The synthesis of several chiral α,α,α-trifluoromethylbenzylamines by an environmentally benign exclusively heterogeneous catalytic method is described. The procedure is based on trifluoromethyl acetophenones as starting materials. The commercially available inexpensive K-10 montmorillonite was applied for the synthesis of imines from the α,α,α-trifluoromethyl ketones and chiral α-methylbenzylamines...
The mode of enantioselection in the proline modified asymmetric hydrogenation of isophorone (3,5,5-trimethyl-2-cyclohexenone) on supported Pd catalysts has been studied. It is shown that several experimental factors, such as modifier structure and chemical nature of the catalyst support, strongly affect the outcome of the hydrogenations. Secondary kinetic resolution was found to be the major reason...
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