Oxidative Rearrangement of Imidazoles with Dimethyldioxirane
摘要:
Tetrahydrobenzimidazoles, on treatment with dimethyldioxirane, rearrange to provide 5-imidazolones exclusively. These rearrangements proceed with a broad range of substrates and with good to excellent levels of diastereoselectivity.
Oxidative Rearrangement of Imidazoles with Dimethyldioxirane
摘要:
Tetrahydrobenzimidazoles, on treatment with dimethyldioxirane, rearrange to provide 5-imidazolones exclusively. These rearrangements proceed with a broad range of substrates and with good to excellent levels of diastereoselectivity.
Oxidative reactions of tetrahydrobenzimidazole derivatives with N-sulfonyloxaziridines
作者:Rasapalli Sivappa、Panduka Koswatta、Carl J. Lovely
DOI:10.1016/j.tetlet.2007.06.088
日期:2007.8
An investigation of the utility of N-sulfonyloxaziridines to effect the oxidative rearrangement of tetrahydrobenzimidazoles to spiro fused 5-imidazolones is reported. In addition to the anticipated rearrangement manifold, it was found that 2-amino substituted derivatives afford products resulting from rearrangement, or alternatively from addition of methanol or water depending on the nature of the N-substituents and reaction conditions. (c) 2007 Elsevier Ltd. All rights reserved.