Journal
TRANSITION METAL CHEMISTRY
Volume 30, Issue 7, Pages 792-796Publisher
SPRINGER
DOI: 10.1007/s11243-005-5630-x
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A series of transition metal methanesulfonates were prepared and characterized by FTIR and TG. Characteristic peaks for the methyl and sulfonyl groups were observed in the i.r. spectra. The number of crystal waters and the process of dehydration and decomposition were determined by TG. The catalytic behavior of transition metal methanesulfonates in Biginelli one-pot cyclocondensation of aldehydes, 1,3-dicarbonyl compounds and urea in absolute EtOH under refluxing temperatures was investigated. The products, 3,4-dihydropyrimidinones, were characterized by elemental analysis, H-1 n.m.r. and FTIR. The experimental results showed transition metal methanesulfonates were efficient for the Biginelli reaction.
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