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Paper | Regular issue | Vol 68, No. 11, 2006, pp.2343-2347
Published online, 22nd September, 2006
DOI: 10.3987/COM-06-10859
N,N,N’,N’-Tetrabromobenzene-1,3-disolfonamide (TBBDS) as an Efficient Promoter for One-Pot Conversion of N-Arylglycines to Sydnones in the Presence of NaNO2/Ac2O under Neutral Conditions

Davood Azarifar,* Hassan Ghasemnejad-Bosra, Ramin Ghorbani-Vaghei, and Mahmood Tajbaksh

*Department of Chemistry, School of Science, Bu-Ali Sina University, Postal Code 65174, Hamadan, Iran

Abstract

N,N,N’,N’-Tetrabromobenzene-1,3-disolfonamide (TBBDS)-promoted one-pot conversion of various N-arylglycines to sydnones using a combination of NaNO2 and Ac2O has been achieved efficiently through N-nitrosation followed by cyclization in high yields (85-95%) under mild and neutral conditions.