Indium(III) Trifluoromethanesulfonate: a Reusable Catalyst for the Sol-vent-free Synthesis of some Quinazolinones/thiones
作者:Bahador Karami、Saeed Khodabakhshi、Sajad Karami
DOI:10.5562/cca2087
日期:——
An environmentally friendly and clean procedure gives octahydroquinazolinones/thiones by a simple Biginelli condensation of urea/thiourea, aromatic aldehydes, and cyclic 1,3-diones in the presence of indium(III) trifluoromethanesulfonate (In(OTf)(3)) in solventless conditions. This method has advantages such as avoidance of the organic solvents, high yield of pure products without any by-product, short reaction times and operational simplicity.