Synthesis 2003(10): 1517-1520
DOI: 10.1055/s-2003-40512
PAPER
© Georg Thieme Verlag Stuttgart ˙ New York

Facile Synthesis of Carboxylic Anhydrides Using 4,5-Dichloro-2-[(4-nitro­phenyl)sulfonyl]pyridazin-3(2H)-one

Jeum-Jong Kima, Yong-Dae Parka, Woo Song Leeb, Su-Dong Choa, Yong-Jin Yoon*a
a Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Chinju 660-701, Korea
Fax: +82(55)7610244; e-Mail: yjyoon@nongae.gsnu.ac.kr;
b Proteome Research Laboratory, Korea Research Institute of Bioscience and Biotechnology, Taejon 305-333, Korea
Further Information

Publication History

Received 24 March 2003
Publication Date:
08 July 2003 (online)

Abstract

A novel and facile synthesis of carboxylic anhydrides from carboxylic acid using 4,5-dichloro-2-[(4-nitrophenyl)sulfonyl]pyridazin-3(2H)-one (2) is presented. Treatment of aliphatic or aromatic carboxylic acids with 2 in the presence of base in organic solvents gave the corresponding anhydrides in good or excellent yields

16

Compounds 10 and 11 were synthesized from saccharin and 2-pyridone, respectively, by reacting with 4-nitrobenzene-sulfonyl chloride in the presence of Et3N in THF according to Kweon’s Method. [14]