Unusual conversion of substituted-3-formylchromones to 3-(5-phenyl-3H-[1,2,4]dithiazol-3-yl)chromen-4-ones: a facile and efficient route to novel 1,2,4-dithiazoles
Autor: | Vivek K. Gupta, Mohan Paul S. Ishar, Priyanka Kanwal, Gurpinder Singh, Ajay Pal Singh Pannu, Tilak Raj |
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Rok vydání: | 2008 |
Předmět: | |
Zdroj: | Tetrahedron Letters. 49:243-246 |
ISSN: | 0040-4039 |
DOI: | 10.1016/j.tetlet.2007.11.081 |
Popis: | Substituted 3-formylchromones react with 2-phenyl-4-dimethylamino-1-thia-3-azabuta-1,3-diene ( 4 ) or thio-benzamide ( 7 ) by heating their toluene solution in a sealed tube to give novel substituted 3-(5-phenyl-3 H -[1,2,4]dithiazol-3-yl)chromen-4-ones ( 6a – e ) in high yields. |
Databáze: | OpenAIRE |
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