A cobalt‐catalyzed 1,4‐aryl migration/disulfonylation cascade applied to α‐bromo N‐sulfonyl amides was developed. The reaction was highly chemoselective, allowing the preparation of α‐arylamides possessing a variety of functional groups. The method was used as the key step to synthesize an alkaloid, (±)‐deoxyeseroline. Mechanistic investigations suggest a radical process.
Microwave assisted efficient aminocarbonylation of N-tosylhydrazones with molybdenum hexacarbonyl and amines
作者:K. Penta Rao、Ashok K. Basak、Amancha Raju、Vikas S. Patil、L. Krishnakanth Reddy
DOI:10.1016/j.tetlet.2013.07.149
日期:2013.10
An efficient aminocarbonylation of N-tosylhydrazones derived from aromatic aldehydes and ketones mediated by molybdenum hexacarbonyl is reported. This method is palladium-free and provides a rapid access to the alpha-aryl acetamides in moderate to good yields. (C) 2013 Elsevier Ltd. All rights reserved.