Studies on 1,2,4-thiadiazolidine derivatives. I. The synthesis and structural determination of 2,4-disubstituted 3,5-disubstituted imino-1,2,4-thiadiazolidines.

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概要

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• The reaction of symmetrical thiourea derivatives, RNHCSNHR, with benzoyl peroxide (BPO) gave only one isomer of 2,4-disubstituted 3,5-disubstituted imino-1,2,4-thiadiazolidines, and that of nonsymmetrical thiourea derivatives, RNHCSNHR′, with BPO yielded a mixture of some of the possible isomeric derivatives. The structures of these compounds were determined by means of NMR, mass spectra, and X-ray analyses. The steric effects of peripheral groups around the thiadiazolidine ring and some reaction mechanism are discussed.

著者

• Tamura Chihiro

  Central Research Laboratories Sankyo Co., Ltd.

• Kinoshita Takeshi

  Central Research Laboratories, Sankyo Co., Ltd.

• Sato Sadao

  Central Research Laboratories, Sankyo Co., Ltd.

関連論文

• Studies on 1,2,4-thiadiazolidine derivatives. I. The synthesis and structural determination of 2,4-disubstituted 3,5-disubstituted imino-1,2,4-thiadiazolidines.
• Studies on 1,2,4-thiadiazolidine derivatives. IV. The isomers of 2,4-disubstituted 3,5-(disubstituted imino)-1,2,4-thiadiazolidines.
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