Nihei, K.Kato, M. J.Yamane, T.Palma, Mario Sergio [UNESP]Konno, K. [UNESP]2014-05-202014-05-202001-07-01Synlett. Stuttgart: Georg Thieme Verlag Kg, n. 7, p. 1167-1169, 2001.0936-5214http://hdl.handle.net/11449/34756Procedures for the deprotection of the 2-nitro- and 2,4-dinitrobenzenesulfonamides to give the corresponding primary amines were developed. The 2-Nitrobenzenesulfonyl group was effectively removed by HSCH2CH2OH/DBU or PhSH/Cs2CO3 in DMF under mild conditions to give the corresponding primary amines in high to excellent yield. For removal of the 2,4-dinitrobrnzenesulfonyl group, the use of thiol alone (HSCH2CH2OH or PhSH) was quite effective. Selective deprotection of 2,4-dinitrobenzene-sulfonamide in the presence of 2-nitrobznzenesulfonamide has also been achieved.1167-1169eng2-nitrobenzenesulfonamide2,4-dinitrobenzenesulfonamideprotecting groupsdeprotectionprimary aminesArtigo10.1055/s-2001-15158WOS:000169781500027Acesso restrito2-s2.0-00349355542901888624506535