Two effective procedures for the synthesis of trichloromethyl ketones, useful precursors of chiral α-amino and α-hydroxy acids
作者:E.J. Corey、John O. Link、Yang Shao
DOI:10.1016/s0040-4039(00)92656-x
日期:1992.6
Trichloroacetic acid can been converted to trichloromethyl ketones in good yield by two practical new procedures, one involving the catalyzed reaction of trichloroacetic acid with aldehydes at 23 °C followed by oxidation and the other utilizing the coupling of organozinc intermediates with trichloroacetyl chloride
A new process for the enantioselective synthesis of chiral α-aryloxy- and α-hydroxy acids
作者:E.J. Corey、John O. Link
DOI:10.1016/s0040-4039(00)92655-8
日期:1992.6
Chiral trichloromethyl carbinols 3, readily available by catalytic enantioselective reduction of trichloromethyl ketones, are converted with inversion of configuration into chiral α-aryloxy and α-hydroxy carboxylic acid derivatives.
A general, catalytic, and enantioselective synthesis of .alpha.-amino acids
作者:E. J. Corey、John O. Link
DOI:10.1021/ja00031a069
日期:1992.2
A catalytic enantioselective synthesis of chiral monosubstituted oxiranes
作者:E.J. Corey、Christopher J. Helal
DOI:10.1016/s0040-4039(00)73959-1
日期:1993.8
A new catalytic enantioselective synthesis of monosubstituted oxiranes has been developed from achiral trichloromethyl ketones by (a) enantioselective carbonyl reduction, (b) selective bis-dechlorination and (c) base-induced ring closure of the resulting chlorohydrins.
Trichloromethyl ketones: asymmetric transfer hydrogenation and subsequent Jocic-type reactions with amines
作者:Michael S. Perryman、Matthew E. Harris、Jade L. Foster、Anushka Joshi、Guy J. Clarkson、David J. Fox
DOI:10.1039/c3cc46070c
日期:——
Amino-amides are important pharmaceutical building-blocks. The enantioselective reduction of trichloromethyl ketones using ruthenium transfer hydrogenation catalysts is reported. The products react in a range of Jocic-type reactions to give enantiomerically enriched amino-amides.