Talik, T.; Plazek, E. published an article in 1955, the title of the article was Syntheses of the hydrazides of pyridinesulfonic acids.Related Products of 636-73-7 And the article contains the following content:
The hydrazides were prepared from pyridinesulfonyl chlorides and N2H4.H2O (I); synthesis of 2- and 4-pyridinesulfonyl chlorides (II and III, resp.) was described in a previous article (cf. preceding abstract). II (from 4 g. 2-mercaptopyridine) was added to 3.6 g. I in 5 mL. H2O with cooling below 30°. On further cooling, 2-pyridylsulfonylhydrazide (IV) crystallized, m. 86-7° (decomposition) (from MeCl). With acetone, IV gave the hydrazone, m. 172-4°. From a similarly treated mixture of I and III, no hydrazide could be isolated; upon addition of acetone, however, acetone 4-pyridylsulfonylhydrazone was obtained, m. 148-9° (decomposition). From 3-pyridinesulfonyl chloride (Francis, C.A. 37, 66529) and I, 3-pyridylsulfonylhydrazide (V) was prepared, m. 152-3° (decomposition) (from H2O); monopicrate, m. 120-1° (decomposition); acetone hydrazone (VI), m. 152-3° (decomposition) (from H2O), monopicrate of VI, m. 126° (decomposition). On heating with H2O or EtOH and on standing at room temperature IV decomposed into N and 2,2′-dipyridyl disulfite, m. 53°; picrate, m. 110°. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Related Products of 636-73-7
Pyridine-3-sulfonic acid(cas:636-73-7) belongs to pyridine-derivatives. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals.Related Products of 636-73-7