Manganese Catalyzed Hydrogenation of Enantiomerically Pure Esters
作者:Magnus B. Widegren、Matthew L. Clarke
DOI:10.1021/acs.orglett.8b00864
日期:2018.5.4
A manganese-catalyzed hydrogenation of esters has been accomplished with TONs up to 1000, using cheap, environmentally benign, potassium carbonate and simple alcohols as activator and solvent, respectively. The weakly basic conditions lead to good functional group tolerance and enable the hydrogenation of enantiomerically enriched α-chiral esters with essentially no loss of stereochemical integrity
[EN] METHODS FOR THE STEREOSELECTIVE SYNTHESIS OF SUBSTITUTED PIPERIDINES<br/>[FR] PROCEDES DE SYNTHESE STEREOSELECTIVE DE PIPERIDINES SUBSTITUEES
申请人:SEPRACOR INC
公开号:WO2002046157A2
公开(公告)日:2002-06-13
One aspect of the present invention relates to methods of synthesizing substituted piperidines. A second aspect of the present invnetion relates to stereoselective methods of synthesizing substituted piperidines. The methods of the present invention will find use in the synthesis of compounds useful for treatment of numerous ailments, conditions and diseases that affict mammals, including but not limited to addiction and pain. An additional aspect of the present invention relates to the synthesis of combinatorial libraries of the substituted piperidines using the methods of the present invention. An additional aspect of the present invention relates to enantiomerically substituted pyrrolidines, piperidines, and azepines.