期刊
JOURNAL OF SAUDI CHEMICAL SOCIETY
卷 21, 期 3, 页码 286-290出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jscs.2015.06.010
关键词
Pyrano[2,3-c] pyrazole; DABCO; Multicomponent reaction; Aqueous medium; Ethylacetoacetate
资金
- UGC, New Delhi
A simple and efficient protocol is developed for the synthesis of dihydropyrano[2,3-c] pyrazole derivatives by a one pot, four component reaction of ethylacetoacetate, hydrazine hydrate, malanonitrile and various aldehydes in the presence of a catalytic amount of DABCO in aqueous medium. This method provides several advantages such as high yield, shorter reaction time, mild reaction condition, operational simplicity, easy work-up procedure with environment friendly nature and purification of products by non-chromatographic methods has been developed. (C) 2015 Production and hosting by Elsevier B.V. on behalf of King Saud University.
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