Enhancement of 5-Aminopenta-2,4-dienals Electrophilicity via Activation by <i>O</i>,<i>N</i>-Bistrifluoroacetylation. Application to an <i>N</i>-Acyl Pictet−Spengler Reaction
作者:Philippe Nuhant、Sanjay B. Raikar、Jean-Charles Wypych、Bernard Delpech、Christian Marazano
DOI:10.1021/jo9019545
日期:2009.12.18
tetrahydro-β-carbolines and tetrahydroisoquinolinesbearing an enal function. In this N-acyl Pictet−Spengler reaction the electrophilicity of the aminopentadienals was dramatically increased by O,N-bistrifluoroacetylation. Recovery of the nitrogen nucleophilicity was achieved using a reductive process, and the heterocyclic amines were converted into aminonitriles by a Strecker reaction in the presence of butanal