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

M. Nagarjuna Reddy
School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India   Fax: +91(40)23012460   eMail: kckssc@uohyd.ac.in   eMail: kckssc@uohyd.ernet.in   eMail: kckssc@yahoo.com
,
K. C. Kumara Swamy*
School of Chemistry, University of Hyderabad, Hyderabad 500 046, A. P., India   Fax: +91(40)23012460   eMail: kckssc@uohyd.ac.in   eMail: kckssc@uohyd.ernet.in   eMail: kckssc@yahoo.com
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Publikationsverlauf

Received: 15. November 2013

Accepted after revision: 23. Januar 2014

Publikationsdatum:
12. Februar 2014 (online)


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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