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Synthesis of 1-triphenylgermylpropiono-4-substituted semicarbazides, thiosemicarbazides and their heterocyclic derivatives

โœ Scribed by Chen Ruyu; Li Fengfu


Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
468 KB
Volume
9
Category
Article
ISSN
0268-2605

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Reaction of 4-aryl-3-thiosemicarbazides
โœ Rafat M. Mohareb; Sherif M. Sherif ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 203 KB ๐Ÿ‘ 2 views

The reaction of 3-aryl-3-thiosemicarbazides 1a-d with carbon disulfide in alkaline medium affords the nonisolable sulfide salts 2a-d. The latter undergo in situ heterocyclization with some โฃ-halogenated compounds, e.g., 3a,b and 13, to afford polyfunctionally substituted 2,3-dihydrothiazoles 4a-e an