Stability and nitrosation efficiency of substitutedN-methyl-N-nitrosobenzenesulfonamides
作者:L. Garc�a-R�o、J. R. Leis、J. A. Moreira、F. Norberto
DOI:10.1002/(sici)1099-1395(1998100)11:10<756::aid-poc48>3.0.co;2-d
日期:1998.10
A series of substituted N-methyl-N-nitrosobenzenesulfonamides [2,4,6-(CH3)(3), 4-CH3O, 4-CH3, 4-Cl and 4-NO2] were synthesized. All of them transfer their nitroso group to N-methylaniline in a quantitative manner, the more reactive being those substituted with electron-withdrawing groups, thus resembling some of the known alkyl nitrites. Studies of their acid denitrosation and base-catalysed hydrolysis demonstrated that the nitrosobenzene-sulfonamides are fairly stable in aqueous media between pH 2 and 11. Their relative stability in aqueous media together with their ability to transfer the nitroso group to nucleophiles suggest their use as excellent alternatives to alkyl nitrites in both neutral and basic media. (C) 1998 John Wiley & Sons, Ltd.