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Communication | Regular issue | Vol 23, No. 10, 1985, pp.2509-2514
Published online, 1st January, 1970
DOI: 10.3987/R-1985-10-2509
3-Methylbenzothiazolines as a New Protected Form for the Carbonyl Function

Hidenori Chikashita,* Nishiki Ishimoto, Shunichiro Komazawa, and Kazuyoshi Itoh

*Department of Applied Chemistry, Faculty of Engineering, Kansai University, Suita, Osaka 564-8680, Japan

Abstract

Protection of carbonyl groups with N-methyl-o-aminothiophenol in ethanol under neutral conditions gave the corresponding benzothiazoline derivatives which were stable against basic, acidic and other reaction conditions. Removal of the protecting group was also performed under neutral conditions by using AgNO3 or HgCI2 in aqueous acetonitrile to regenerate the parent carbonyl compounds.