Canadian Journal of Chemistry

Acetylenic esters. II. Further addition reactions with sulfur-and nitrogen-containing compounds

JW Lown, JCN Ma

文献索引：Lown,J.W.; Ma,J.C.N. Canadian Journal of Chemistry, 1967 , vol. 45, p. 953 - 967

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被引用次数: 43

摘要

Substituted thiosemicarbazides react with dimethyl acetylenedicarboxylate to give 3-amino- 2, 3-dihydrothiazin-4-ones. Confirmation of the structures is provided by catalytic hydrogenation and by characteristic mass spectral fragmentations. 4-Substituted thiosemicarbazides react with methyl propiolate in the same way as monosubstituted hydrazines and hydrazides to give hydrazones, whereas 1-substituted thiosemicarbazides ...