Synthesis 2016; 48(21): 3743-3752
DOI: 10.1055/s-0035-1561657
paper
© Georg Thieme Verlag Stuttgart · New York

An Efficient Synthesis of 1,3-Benzothiadiazin-4(3H)-one 2-Oxides: Novel Anthranilic Acid Derivatives

Indira Sen
a   Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim, Ilhas, Goa 403110, India   Email: sitaram.pal@syngenta.com
,
Swarnendu Sasmal
a   Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim, Ilhas, Goa 403110, India   Email: sitaram.pal@syngenta.com
,
Roger G. Hall
b   Syngenta Crop Protection, Muenchwilen AG, Schaffhauserstrasse, 4332 Stein, Switzerland
,
Sitaram Pal*
a   Syngenta Biosciences Pvt. Ltd., Santa Monica Works, Corlim, Ilhas, Goa 403110, India   Email: sitaram.pal@syngenta.com
› Author Affiliations
Further Information

Publication History

Received: 05 April 2016

Accepted after revision: 02 May 2016

Publication Date:
15 June 2016 (online)


Abstract

Derivatives of anthranilic acid exhibit a range of useful biological activities. Herein we describe an efficient synthetic route to 1,3-benzothiadiazin-4(3H)-one 2-oxides via copper-catalyzed N-arylation of sulfonimidamides followed by cyclization. Such 1,3-benzothiadiazin-4(3H)-one 2-oxides can be viewed as novel anthranilic acid derivatives.

Supporting Information