PROCESS FOR OBTAINING A DICHLORO-(S)-6',6'-DIMETHYL-2,2'-DIAMINOBIPHENYL-RUTHENIUM CATALYST SUPPORTED IN AN INORGANIC SOLID AND THE USE THEREOF, AS A CATALYST IN HYDROGEN REDUCTION REACTIONS.

摘要

Procedure for preparing a 2,2'diamino-6,6'dimethyldiphenyl. Said compound being anchored in mesoporous silicon dioxide, which is prepared by an acetylating and nitrating reaction of ortho-toluidine, hydrolysis, condensation, reduction, isomer separation, acetylation, bromation, silylation, and anchoring process. Different substrate hydrogenation reactions were carried out with the catalyst for a period of 1 to 10h. At the end of this period the reaction was stopped and samples were taken, the percentage of conversion and enantiomeric excess thereof being determined by means of gas chromatography. The outputs were of from about 95% to about and enantiomeric excesses were higher than 95%.