Asymmetric reduction of trifluoromethyl ketones containing a sulfur functionality by the alcohol dehydrogenase from Geotrichum
The reduction of trifluoromethyl ketones containing a sulfur functionality by the crude alcohol dehydrogenase from Geotrichum proceeded successfully, and the corresponding optically active alcohols were synthesized with high yields and excellent enantiose
2-(2,2,2-trifluoroethylidene)-1,3-dithiane monoxide as a trifluoromethylketene equivalent
A method to prepare 2-(2,2,2-trifluoroethylidene)-1,3-dithiane monoxide has been developed, and its interesting reactivity under Pummerer-like conditions is disclosed. The products are useful synthetic intermediates for the synthesis of α-trifluoromethyl
2-(2,2,2-Trifluoroethylidene)-1,3-dithianes. New Intermediates for the Preparation of CF3-Containing Compounds
A simple and efficient synthesis of 2-(2,2,2-trifluoroethylidene)-1,3-dithianes is described.The title compounds are versatile intermediates for the preparation of trifluoromethyl derivatives.
Solberg, Jan,Benneche, Tore,Undheim, Kjell
p. 69 - 73
(2007/10/02)
MICROBIOLOGICAL SYNTHESIS OF VARIOUSLY PROTECTED L-GLYCERALDEHYDES IN HIGH OPTICAL PURITY
Variously protected L-glyceraldehydes have been enantioselectively synthesized through a sequence involving acylation of formylanion equivalents with glycolic acid derivatives followed by baker's yeast mediated reduction of the resulting ketones.
Guanti, Giuseppe,Banfi, Luca,Narisano, Enrica
p. 3547 - 3550
(2007/10/02)
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