An Efficient One-Pot Synthesis of 3-(2-Benzothiazolyl)coumarins
β Scribed by Dryanska, Veneta
- Book ID
- 120154376
- Publisher
- Taylor and Francis Group
- Year
- 1987
- Tongue
- English
- Weight
- 183 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0039-7911
No coin nor oath required. For personal study only.
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## Abstract magnified image Various diarylpyrido[3,2β__c__]coumarins **3aβl** have been synthesized in one step by reacting 4βhydroxy coumarins **1aβd** with Ξ±,Ξ²βunsaturated ketones **2aβc** in the presence of ammonium acetate and acetic acid under Kroehnke's reaction conditions.
## Abstract magnified image Poly(ethylene glycol) (PEGβ400) has been used as sustainable, nonvolatile, and environmental friendly reaction solvent for the synthesis of title compounds. Various diaryl pyrido[3,2βc]coumarins have been synthesized in one step by reacting 4βhydroxyβ7βmethylβcoumarin w