Journal
RSC ADVANCES
Volume 5, Issue 64, Pages 51576-51580Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra09025c
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Funding
- CSIR
- CSIR, New Delhi [CSC-0301]
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An efficient synthesis of fused imidazo-heterocycles is described using Cu(OTf)(2) in [bmim]BF4 by the multi-component reaction of pyridin-2(1H)-one or thiazol/benzo[d]thiazol-2(3H)-ones with O-tosylhydroxyl amine and acetophenones under microwave irradiation. The present method is very rapid and the product formation occurs via a C-H functionalization/tandem addition-cyclization process. The ionic liquid containing copper triflate is recovered and reused four times.
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