Novel generation and ring closure of 1,3-thiaza-1,3-butadiene S-oxides through thermal cycloreversion of 6H-1,3,5-oxathiazine S-oxides |
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| Authors: | Kazuaki Shimada Islam Md. RafiqulMasanobu Sato Shigenobu AoyagiYuji Takikawa |
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| Affiliation: | Department of Chemical Engineering, Faculty of Engineering, Iwate University, Morioka, Iwate 020-8551, Japan |
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| Abstract: | Heating of 6H-1,3,5-oxathiazine S-oxides efficiently afforded 1,2,4-oxathiazoles through the mechanism involving thermal cycloreversion of the substrates and the subsequent ring closure of the intermediary 1,3-thiaza-1,3-butadiene S-oxides. |
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| Keywords: | 6H-1,3,5-oxathiazine S-oxide 1,3-thiaza-1,3-butadiene S-oxide sulfine 5H-1,2,4-oxathiazole 1,2,4-thiadiazole |
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