Collection of Czechoslovak chemical communications

Preparation of some pyrazole derivatives by extrusion of elemental sulfur from 1, 3, 4-thiadiazines

S Rádl

文献索引：Radl, Stanislav Collection of Czechoslovak Chemical Communications, 1992 , vol. 57, # 3 p. 656 - 659

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被引用次数: 6

摘要

Abstract In connection with our research of pyrazolo [3, 4-b] quinolines we were also interested in the preparation of various pyrazole intermediates. In some cases we found a method useful based on extrusion of elemental sulfur from intermediate 1, 3, 4-thiadiazines. This short contribution describes the preparation of some new 3-anilino-4- pyrazolecarboxylic acid derivatives using this method.