Synthesis of benzoxanthene derivatives using Brønsted acidic ionic liquids (BAILs), 2-pyrrolidonium hydrogen sulfate and (4-sulfobutyl)tris(4-sulfophenyl)phosphonium hydrogen sulfate-Science-Chemical Encyclopedia-lookchem

Synthesis of benzoxanthene derivatives using Brønsted acidic ionic liquids (BAILs), 2-pyrrolidonium hydrogen sulfate and (4-sulfobutyl)tris(4-sulfophenyl)phosphonium hydrogen sulfate
Add time:08/29/2019 Source:sciencedirect.com

Brønsted acidic ionic liquids (BAILs), 2-pyrrolidonium hydrogen sulfate and (4-sulfobutyl)tris(4-sulfophenyl)phosphonium hydrogen sulfate are found to be efficient catalysts for synthesis of 14-aryl-14H-dibenzo[a,i]xanthene-8,13-dione, 3,4-dihydro-1H-benzo[b]xanthene-1,6,11(2H,12H)-trione, and aryl-5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraone derivatives.

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