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Synthesis and asymmetric hydrogenation of (3E)-1-benzyl-3-[(2-oxopyridin-1(2H)-yl)methylidene]piperidine-2,6-dione†
Alexander A. Bisset,Akira Shiibashi,Jasmine L. Desmond,Allan Dishington,Teyrnon Jones,Guy J. Clarkson,Takao Ikariya,Martin Wills
Chemical Communications Pub Date : 10/26/2012 00:00:00 , DOI:10.1039/C2CC36807B
Abstract

The synthesis of (3E)-1-benzyl-3-[(2-oxopyridin-1(2H)-yl)methylidene]piperidine-2,6-dione 4 from N-benzylglutarimide was achieved in three steps. The asymmetric hydrogenation of 4 gave either the product of partial reduction (10) or full reduction (13), depending on the catalyst which was employed, in high ee in each case. Attempts at asymmetric transfer hydrogenation (ATH) of 4 resulted in formation of a racemic product.

Graphical abstract: Synthesis and asymmetric hydrogenation of (3E)-1-benzyl-3-[(2-oxopyridin-1(2H)-yl)methylidene]piperidine-2,6-dione
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