Organocatalytic Approach to Polysubstituted Piperidines and Tetrahydropyrans
摘要:
Polysubstituted piperidines and tetrahydropyrans are synthesized from aldehydes and two classes of trisubstituted nitroolefins via an O-TMS protected diphenylprolinol catalyzed domino Michael addition/aminalization (or acetalization) process. This approach allows formation of four contiguous stereocenters in the piperidine or tetrahydropyran ring in one step with excellent enantioselectivity.
Organocatalytic Approach to Polysubstituted Piperidines and Tetrahydropyrans
作者:You Wang、Shaolin Zhu、Dawei Ma
DOI:10.1021/ol200004s
日期:2011.4.1
Polysubstituted piperidines and tetrahydropyrans are synthesized from aldehydes and two classes of trisubstituted nitroolefins via an O-TMS protected diphenylprolinol catalyzed domino Michael addition/aminalization (or acetalization) process. This approach allows formation of four contiguous stereocenters in the piperidine or tetrahydropyran ring in one step with excellent enantioselectivity.