A new synthesis of β-keto amides by reduction of Passerini adducts
摘要:
The Passerini reaction between glyoxals, isocyanides and acetic acid forms beta-keto acyloxyamides, which are readily transformed in beta-keto amides by reductive deacetoxylation with zinc. The versatility of this procedure, which allows introducing different groups both in position-3 and the amide nitrogen, makes it ideal for its use in diversity-oriented synthesis. in combination with subsequent complexity generation reactions. (C) 2004 Elsevier Ltd. All rights reserved.