Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9614858 | Journal of Molecular Catalysis A: Chemical | 2005 | 10 Pages |
Abstract
The following general scheme is proposed for the Ru(III)-catalysed oxidation of N-heterocycles by chloramine-T in acid medium to explain the experimental results:(i)TsNHCl+H3O+âK1TsNH2+H2O+Clfast(ii)S+nH2O+ClâK2Xfast(iii)X+Ru(III)âK3Xâ²fast(iv)Xâ²â¶k4productsslow and r.d.sHere n = 3 for imidazole, 2 for benzimidazole and 1 for 2-hydroxybenzimidazole, 2-aminobenzimidazole and 2-phenylbenzimidazole. S, X and Xâ² represents the substrate and complex intermediate species. The above scheme leads to the following rate law:rate=K1K2K3k4[CAT]t[S][H3O+][Ru(III)][TsNH2]+K1[H3O+]+K1K2[S][H3O+]+K1K2K3[S][H3O+][Ru(III)]
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Puttaswamy Puttaswamy, R.V. Jagadeesh, Nirmala Vaz, A. Radhakrishna,