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Paper | Regular issue | Vol 29, No. 5, 1989, pp.895-898
Published online, 1st January, 1970
DOI: 10.3987/COM-89-4866
Novel Exchange Reaction of 2-Imino or 2-Thiono Derivatives of 1,3-Thiazines and 1,3-Oxazines with p-Toluenesulfonyl Isocynate

Mitsuhiro Ichinari and Yoshio Hayase

*Aburahi Laboratories, Shionogi & Co. Ltd., Gotanda, Koka-cho, Koka-gun, Shiga 520-3423, Japan


The reaction of 2-arylimino-1,3-thiazine with p-toluenesulfonyl isocyanate led to the formation of 2-(p-toluenesulfonyl)imino-1,3-thiazine. A similar reaction carried out with 1,3-thiazine-2-thione and 1,3-oxazine-2-thione gave 2-(p-toluenesulfonyl)imino-1,3-thiazine or 1,3-oxazine, respectively.