Journal Title
Title of Journal: J Chem Sci
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Abbravation: Journal of Chemical Sciences
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Authors: THIRUMAL YEMPALA BALASUBRAMANIAN SRIDHAR SRINIVAS KANTEVARI
Publish Date: 2015/07/14
Volume: 127, Issue: 5, Pages: 803-810
Abstract
A series of new tricyclic heterocyclic xanthene18diones tethered with chromophoric dibenzo b dfuran dibenzob dthiophene and 9methyl9Hcarbazoles were synthesized through onepot condensation of dibenzob dfuran2carbaldehyde dibenzob d thiophene2carbaldehyde and 9methyl9Hcarbazole3carbaldehyde with cyclic 13dicarbonyls in the presence of recyclable PPASiO2 catalyst under solventfree conditions Further UVVisible absorption properties of all the synthesized compounds were investigated in CHCl3 THF and acetonitrileA series of new tricyclic heterocyclic xanthene18diones tethered with chromophoric dibenzobdfuran dibenzobdthiophene and 9methyl9Hcarbazoles were synthesized through onepot condensation of corresponding aldehydes with cyclic 13dicarbonyls in the presence of recyclable PPASiO2 catalyst under solvent free conditions Further UVVisible absorption properties of all the synthesized compounds were investigated in various solventsAuthors TY and SK are thankful to Dr Lakshmi Kantham Director and Dr V JRao Head Crop Protection Chemicals Division IICT Hyderabad for their continuous support and financial assistance from CSIR projects NWP0054 and NWO0055 TY SRF is thankful to CSIR for fellowshipCCDC 849770 contains Crystallographic data for the compound 7a This data can be obtained free of charge via http//wwwccdccamacuk/datarequest/cif Scanned copies of 1H 13C and ESIHRMS spectra of 6ac 7ac and 8ac are given in electronic supporting information available at wwwiasacin/chemsci
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