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A novel deprotection/functionalization sequence using 2,4-dinitrobenzenesulfonamide: Part 1

Messeri, Tommaso and Sternbach, Daniel D. and Tomkinson, Nicholas C. O. (1998) A novel deprotection/functionalization sequence using 2,4-dinitrobenzenesulfonamide: Part 1. Tetrahedron Letters, 39 (13). pp. 1669-1672. ISSN 0040-4039

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Abstract

Treatment of R1R2SO2C6H3(NO2)2-2,4 [R1 = 4-MeOC6H4CH2, R2 = H, CH2CH2OMe, allyl; R1 = 3,4-methylenedioxyphenyl, R2 = H, CH2CH2OMe] with R3COSH [R3 = Me, Ph, CF3, CMe3, 2-imidazolyl] in the presence of cesium carbonate gave R1R2NCOR3 in 81-96% yield.