Nitrogen → 8-(2-Nitrobenzenesulfonyl)amino-5,6,7,8-tetrahydroquinoline

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To a solution of 5,6,7,8-tetrahydro-quinolin-8-ylamine (1.73 g, 12.0 mmol) dissolved in THF (80 mL) was added 2-nitrobenzenesulfonyl chloride (2.92 g, 13.0 mmol) and Et3N (2.4 mL, 18.0 mmol). The mixture was stirred for 16 hours at room temperature under a positive pressure of N2. The reaction mixture was quenched with saturated aqueous NaHCO3 (100 mL) and extracted with CH2Cl2 (2×100 mL). The combined organic extracts were dried (Na2SO4), filtered, and concentrated in vacuo to afford 2-nitro-N-(5,6,7,8-tetrahydro-quinolin-8-yl)-benzenesulfonamide as a dark brown solid (3.72 g, 94%). 1H NMR (CDCl3) δ 1.59 (m, 1H), 1.89 (m, 2H), 2.50 (m, 1H), 2.76 (m, 2H), 4.35 (m, 1H), 6.86 (m, 1H), 7.04 (m, 1H), 7.35 (m, 1H), 7.74 (m, 2H), 7.99 (m, 1H), 8.12 (m, 1H), 8.26 (m, 1H).

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