期刊论文详细信息
Journal of The Chilean Chemical Society | |
AN EFFICIENT AND GREEN PROTOCOL FOR THE SYNTHESIS OF DIHYDROPYRANO [2,3-C] PYRAZOLES IN AQUEOUS MEDIUM USING THIAMINE HYDROCHLORIDE AS A CATALYST | |
MAHAJAN, PRAVINS1  NIKAM, MUKESH D1  CHATE, ASHA V1  GILL, CHARANSINGHH1  DABHADE, SANJAYK1  | |
[1] Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India | |
关键词: Multicomponentreaction; Dihydropyrano[; 2; 3-; c]; pyrazoles; Green chemistry; Aqueous medium; Ultrasound irradiation.; | |
DOI : 10.4067/S0717-97072015000100016 | |
学科分类:化学(综合) | |
来源: Sociedad Chilena de Quimica | |
【 摘 要 】
A green and expedient approachfor the synthesis of dihydropyrano[2,3-c] pyrazoles viafour-component reaction of ethyl acetoacetate, hydrazine hydrate, aromaticaldehydes and malononitrile at room temperature under ultrasound irradiationis described. The reaction has been catalyzed by thiamine hydrochloride in aqueousmedium. This protocol afforded several advantages such as inexpensive, easilyavailable catalyst, simple operational procedure, excellent yield, use of aqueousmedium and ultrasound irradiation that is considered to be relatively eco-friendly.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201902019820756ZK.pdf | 299KB | download |