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Trithia- and dithiaselenapentalenes from benzylidene-1,2-dithioles and heterocumulenes

โœ Scribed by Yunxiang Ding; Jie Kong; David H. Reid

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
244 KB
Volume
8
Category
Article
ISSN
1042-7163

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โœฆ Synopsis

Deprotonation of the 5-aryl-3-benzyl-1k 4 ,2-dithiol-1ylium iodides (6a-6d) obtained by reaction of the 1aryl-4-phenylbutan-1,3-diones (5a-5d) with hydrogen sulfide and iodine in ethanol gave the stable 5-aryl-3benzylidene-3H-1,2-dithioles (3a-3d), respectively. The dithioles (3a-3d) underwent thermal cycloaddition reactions with isoselenocyanates and isothiocyanates to give the 2-(substituted amino)-5-aryl-3phenyl-6,6ak 4 -dithia-1-selenapentalenes (7a-7h) and the 2-(substituted amino)-5-aryl-3-phenyl-1,6,6ak 4trithiapentalenes (8a-8l), respectively. The dithioles (3a-3d) reacted with isocyanates to give the N-substituted-2-phenyl-2-(5-aryl-3H-1,2-dithiol-3-ylidene) acetamides (11a-11h). แญง 1997

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Reactions of 3-Benzylidene-3H-1,2-dithio
Reactions of 3-Benzylidene-3H-1,2-dithioles and 3-Alkyl-1ฮป4,2-dithiol-1-ylium Salts with Isonitriles: A Synthesis of 1,6aฮป4-Dithia-6-azapentalenes
โœ Yunxiang Ding; David H. Reid ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 187 KB ๐Ÿ‘ 1 views

1,6ak 4 -Dithia-6-azapentalenes (7a)-( 7h), (12a), and (12b) have been synthesized by the reaction of 5-aryl-3-benzylidene-3H-1,2-dithioles with isonitriles in the presence of phosphoryl chloride and by the reaction of 3-benzyl-and 3-methyl-1k 4 , 2-dithiol-1-ylium salts with isonitriles. Possible m