Strecker reactions of chiral N-acylhydrazones

Abstract

Development of a method for addition of trimethylsilyl cyanide to chiral oxazolidinone-derived N-acylhydrazones is described. The diastereoselectivity was found to be highly dependent on the substituent of the oxazolidinone moiety; 4-phenyl-2-oxazolidinone achieved much higher stereocontrol than four other oxazolidinones screened. The reaction gives modest selectivity with aliphatic hydrazones and excellent selectivity with hydrazones prepared from aromatic aldehydes. © 2006 The Japan Institute of Heterocyclic Chemistry.