Synthesis of previously unknown 3,3′-linearly linked sulfur- and selenium-containing bispyrazoles by reactions of 3-alkenyl-5-chloropyrazoles with bischalcogenols

被引：0
作者：
E. V. Rudyakova
D. O. Samultsev
E. P. Levanova
G. G. Levkovskaya
机构：
[1] Siberian Branch of Russian Academy of Sciences,Faworsky Irkutsk Institute of Chemistry
来源：
Russian Journal of Organic Chemistry | 2013年 / 49卷
关键词：
Pyrazole; Dithiol; Pyrazole Ring; Sulfanyl; Pyrazole Derivative;
D O I：
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中图分类号：
学科分类号：
摘要：
By reactions of 3-alkenyl-5-chloropyrazoles with appropriate dichalcogenols the fi rst specimens were obtained of previously unknown 3,3’-linearly linked bispyrazoles containing in the alkyl chain of the linker two heteroatoms, sulfur or selenium. 3-Vinyl-5-chloropyrazoles react with 1,3-propanedithiol, 2-hydroxy-1,3-propanedithiol, and 2-hydroxy-1,3-propanediselenol under UV irradiation and heating at 60°C over 8 h affording products of the addition against Markovnikoff rule. The radical addition of 1,3-propanedithiol to 3-isopropenyl-5-chloropyrazole required a longer time, 15 h.
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页码：734 / 738
页数：4
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