The Journal of Organic Chemistry

Nitrile sulfides. Synthesis of 1, 2, 4-thiadiazoles

RK Howe, JE Franz

文献索引：Howe,R.K.; Franz,J.E. Journal of Organic Chemistry, 1974 , vol. 39, # 7 p. 962 - 964

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被引用次数: 50

摘要

By-product 4 (Scheme I) probably occurs uia cycloaddition of R'CNS to R'CN. The R'CNS could form from reaction of atomic sulfur with R'CN10 (Scheme I) or from direct sulfur atom transfer between RCNS and R'CN. Yields of 3 were found to increase with greater excesses of nitrile, as expected, and with higher temperatures (Tables I and 11). Evidently, the rate of cycloaddition reaction to form thiadiazole increases more rapidly with temperature than ...