A novel β-(oxy)alkyl radical during copper(I)-mediated stereoselective synthesis of (Z)-ene-1,4-diones in a reaction of 2,2,2-trichloro-1-phenylethanone
作者:Ram N. Ram、Ram K. Tittal
DOI:10.1016/j.tetlet.2016.04.080
日期:2016.6
novel β-(oxy)alkyl radical derived from trichloro methyl compound containing neither a suitably located C–C multiple bond nor a leaving group or a H-atom at the β-position of the radical in a reaction of 2,2,2-trichloro-1-phenyl-ethanone with 2 mol equiv each of CuCl and bpy in refluxing DCE under a N2 atm underwent intramolecular heterolysis (just like formation of intact radical cation–anion pair)
Copper(I)-Promoted Synthesis of Chloromethyl Ketones from Trichloromethyl Carbinols
作者:Ram N. Ram、T. P. Manoj
DOI:10.1021/jo8007644
日期:2008.7.1
Reaction of several trichloromethyl carbinols with 2 equiv of CuCl/bpy in refluxing DCE for 3 h afforded chloromethyl ketones in excellent yield by 1,2-H shift in the copper-chlorocarbenoid intermediate.
Synthesis of 2,4-disubstituted 3-chlorofurans and the effect of the chlorine substituent in furan Diels–Alder reactions
作者:Ram N. Ram、Neeraj Kumar
DOI:10.1016/j.tetlet.2007.11.193
日期:2008.1
3-chlorofurans were synthesized in 42–69% overall yields by CuCl/bpy-catalyzed halogen atom transfer radical cyclization of 1-substituted 2,2,2-trichloroethyl allyl ethers to 2-substituted 3,3-dichloro-4-(1-chloroalkyl)tetrahydrofurans followed by base promoted dehydrochlorination. Diels–Alderreactions of 4-substituted 2-(2-furyl)-, 2-styryl-, and 2-crotyl-3-chlorofurans with dimethyl acetylenedicarboxylate
A practical asymmetric synthesis of homochiral α-arylglycines
作者:Christelle Mellin-Morlière、David J. Aitken、Steven D. Bull、Stephen G. Davies、Henri-Philippe Husson
DOI:10.1016/s0957-4166(01)00022-2
日期:2001.2
Enantioselective reduction of a series of substituted aryl trichloromethyl ketones with the CBS-catecholborane reagent afforded homochiral aryl trichloromethyl carbinols which have been elaborated to give homochiral alpha -arylglycines in high e.e. (C) 2001 Elsevier Science Ltd. All rights reserved.
GALLINA, CARLO;GIORDANO, CESATU, SYNTHESIS (BRD),(1989) N, C. 466-468