Journal
SYNTHETIC COMMUNICATIONS
Volume 51, Issue 2, Pages 245-255Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00397911.2020.1822409
Keywords
Ammonia; cyclization; 3-hydroxyoxindole; isatin; quinoline-4-carboxamide
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Funding
- Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India
- NIPER, Raebareli
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An efficient protocol for the synthesis of medicinally relevant 2-styrylquinoline-4-carboxamide has been developed through aqueous ammonia-mediated domino ring-opening and cyclization strategy. The starting precursors, 3-hydroxyoxindoles, were easily prepared in high yields through organocatalytic on water reaction. The wide substrate scope and operationally simple experimental procedures provide an opportunity to create a library of 2-styrylquinoline-4-carboxamide derivatives.
A straightforward and efficient protocol for the synthesis of medicinally relevant 2-styrylquinoline-4-carboxamide has been developed by aqueous ammonia-mediated domino ring-opening and cyclization strategy of 3-hydroxyoxindole. The starting precursors 3-hydroxyoxindoles were easily prepared through organocatalytic on water reaction of isatin and benzalacetone in high yields. The wide substrate scope with operationally simple experimental procedures provides an opportunity to create library of 2-styrylquinoline-4-carboxamide derivatives.
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