The Tsuji–Trost protocol has been successfully employed for the allylicalkylation of preformed lactone enolates. It has been demonstrated that this Pd‐catalyzed reaction can be carried out in an enantio‐ and diastereoselective manner. The use of additives, such as LiCl, was found to be crucial for reaching high levels of product selectivity. For one particular pair of reactants, density functional
CRYSTALLINE SYNTHETIC INTERMEDIATE USEFUL IN PROCESSES FOR MAKING A MDM2 INHIBITOR
申请人:Amgen Inc.
公开号:EP3805232A1
公开(公告)日:2021-04-14
The present invention provides the crystalline form of an intermediate useful in processes for making 2-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-1-((S)-1-(isopropylsulfonyl)-3-methylbutan-2-yl)-3-methyl-2-oxopiperidin-3-yl)acetic acid as well as processes for making the intermediate.