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Start Over Author "Zanwar MR" Journal journal of organic chemistry
2 results on '"Zanwar MR"'

1. FeCl3 catalyzed regioselective C-alkylation of indolylnitroalkenes with amino group substituted arenes.

Author

Zanwar MR, Kavala V, Gawande SD, Kuo CW, Huang WC, Kuo TS, Huang HN, He CH, and Yao CF

Subjects
Alkylation, Catalysis, Amines chemistry, Chlorides chemistry, Ferric Compounds chemistry, Indoles chemistry, Nitro Compounds chemistry
Abstract

An efficient FeCl3 catalyzed protocol for the synthesis of amino functionalized indolylnitroalkanes from easily available precursor indolylnitroalkenes and substituted amines has been developed. Regioselective C-alkylation in the presence of free amino substituted arenes occurred. The scope of this methodology shows good functional group tolerance, and further, this protocol was used to prepare indolylquinoline derivatives.

Published
2014
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2. Alcohol mediated synthesis of 4-oxo-2-aryl-4H-chromene-3-carboxylate derivatives from 4-hydroxycoumarins.

Author

Zanwar MR, Raihan MJ, Gawande SD, Kavala V, Janreddy D, Kuo CW, Ambre R, and Yao CF

Subjects
Benzopyrans chemistry, Crystallography, X-Ray, Models, Molecular, Molecular Structure, 4-Hydroxycoumarins chemistry, Alcohols chemistry, Benzopyrans chemical synthesis
Abstract

The unusual alcohol mediated formation of 4-oxo-2-aryl-4H-chromene-3-carboxylate (flavone-3-carboxylate) derivatives from 4-hydroxycoumarins and β-nitroalkenes in an alcoholic medium is described. The transformation occurs via the in situ formation of a Michael adduct, followed by the alkoxide ion mediated rearrangement of the intermediate. The effect of the different alcohol and nonalcohol media on the reaction was investigated.

Published
2012
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