title: Cyclopropenium ion catalysed Beckmann rearrangement.
abstract: 1-Chloro-2,3-diphenylcyclopropenium ion was found to be a very efficient organocatalyst (3 mol% loading) for liquid phase Beckmann rearrangement of various ketoximes to the corresponding amides/lactams within 2 h in acetonitrile at reflux temperature. This is the first example of the application of the cyclopropenium ion as a catalyst, which opens up a new aspect of the synthetic utility of aromatic cation based catalysis.
authors.affiliation: Department of Chemistry, University of Allahabad-211 002, Allahabad, India.
authors.forename: Vishnu P
authors.initials: VP
authors.lastname: Srivastava
authors.forename: Rajesh
authors.initials: R
authors.lastname: Patel
authors.lastname: Garima
authors.forename: Lal Dhar S
authors.initials: LD
authors.lastname: Yadav