Magnesium bis(monoperoxyphthalate) hexahydrate as mild and efficient oxidant for the synthesis of selenones
作者:Andrea Temperini、Massimo Curini、Ornelio Rosati、Lucio Minuti
DOI:10.3762/bjoc.10.127
日期:——
method for the direct oxidation of selenides to selenones using magnesium bis(monoperoxyphthalate) hexahydrate (MMPP) has been developed. Noteworthy this transformation proceeds at room temperature, employs a cheap and safety oxidant and has a broad functional group tolerance. Moreover, the produced selenones could be useful intermediates for the synthesis of different heterocyclic compounds.
Facile synthesis of oxazolidinones catalyzed by n-Bu4NBr3/n-Bu4NBr directly from olefins, chloramine-T and carbon dioxide
作者:De-Lin Kong、Liang-Nian He、Jin-Quan Wang
DOI:10.1016/j.catcom.2010.04.003
日期:2010.6
A binary catalyst system composed of n-Bu4NBr3/n-Bu4NBr was developed for facile synthesis of 5-substituted 2-oxazolidinones with perfect regioselectivity in a single operation directly from olefins, chloramine-T and CO2. The choice of efficient binary catalysts for two steps, i.e. aziridination and cycloaddition, and the optimization of reaction condition are keys to the one-pot synthesis of 5-substituted 2-oxazolidinones. A possible mechanism for the present one-pot synthesis of oxazolidinones was also proposed. (C) 2010 Elsevier B.V. All rights reserved.