A new one-pot method for the synthesis of alpha-siloxyamides is described. The three substrates, H-C(CN)(2)O-SiMe(2)t-Bu, aldehydes or ketones, and primary or secondary amines, are simply mixed in one portion in acetonitrile or ether; the alpha-siloxyamides are obtained within short peroids in excellent yields in many cases. As a demonstration of our method, the synthesis of (-)-bestatin was carried out.
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