An efficient one-pot synthesis of tetrahydrobenzo[a]xanthene-11-one and diazabenzo[a]anthracene-9,11-dione derivatives under solvent free condition

Nandi, Ganesh Chandra ; Samai, Subhasis ; Kumar, Ram ; Singh, M.S. (2009) An efficient one-pot synthesis of tetrahydrobenzo[a]xanthene-11-one and diazabenzo[a]anthracene-9,11-dione derivatives under solvent free condition Tetrahedron, 65 (34). pp. 7129-7134. ISSN 0040-4020

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Official URL: http://doi.org/10.1016/j.tet.2009.06.024

Related URL: http://dx.doi.org/10.1016/j.tet.2009.06.024

Abstract

Indium(III) chloride catalyzed one-pot synthesis of 12-aryl/alkyl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one and 8,10-dimethyl-12-aryl-8,12-dihydro-7-oxa-8,10-diazabenzo[a]anthracene-9,11-dione derivatives have been achieved by three component cyclocondensation of aldehydes, β-naphthol and cyclic 1,3-dicarbonyl compounds under solvent free condition in high yields. P2O5 too has been found as an effective catalyst towards this transformation.

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