Synthesis 2014; 46(08): 1091-1099
DOI: 10.1055/s-0033-1340821
paper
© Georg Thieme Verlag Stuttgart · New York

Palladium-Catalyzed Reactions of Allenes with 2-Iodobenzenesulfonamides: Simple Synthesis of Benzosultams under Green Conditions

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Received: 15. November 2013

Accepted after revision: 23. Januar 2014

Publikationsdatum:
12. Februar 2014 (online)


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Abstract

A palladium-catalyzed reaction for the synthesis of benzosultams from allenes and 2-iodobenzenesulfonamides in poly(ethylene glycol) medium is described. This route is compared with a second method involving an internal Heck reaction of alkene-functionalized 2-iodobenzenesulfonamides. Key products were characterized by single-crystal X-ray crystallography.

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