Sulfamide → 1-(2-Fluorophenyl)-1,3-dihydro-2,1,3-benzothiadiazole 2,2-dioxide

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Reaction Steps

In an analogous manner to general procedure I, step 3, N-(2-fluorophenyl)benzene-1,2-diamine (1.0 g, 5.0 mmol) was treated with sulfamide (0.58 g, 6.0 mmol) to provide 0.52 g (40%) of 1-(2-fluorophenyl)-1,3-dihydro-2,1,3-benzothiadiazole 2,2-dioxide. HRMS: calculated for C12H9FN2O2S+Na+, 287.02609; found (ESI, [M+Na]+), 287.0263; HPLC purity 100.0% at 210-370 nm, 8.4 minutes; Xterra RP18, 3.5 u, 150×4.6 mm column, 1.2 mL/minutes 85/15-5/95 (Ammonium formate buffer pH=3.5/ACN+MeOH) for 10 minutes hold 4 minutes.

Provenance & Evidence