Convenient method for the preparation of secondary α-ketoamides via aminocarbonylation of acid chlorides with carbamoylsilane

Add time:08/25/2019    Source:sciencedirect.com

The convenient transformation of acid chlorides into corresponding secondary α-ketoamides by the aminocarbonylation of acid chlorides with N-methoxymethyl-N-methylcarbamoyl(trimethyl)silane is described. The use of carbamoylsilane containing methoxymethyl group avoids the reaction of products α-ketoamides with carbamoylsilane in situ in the aminocarbonylation reaction. The methoxymethyl group was used as an amino protecting group and could be easily converted into hydrogen atom by simple acid hydrolysis.

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