Pyridine → 1-(5-Chloro-2-methoxy-benzenesulfonyl)-7-nitro-1,2,3,4-tetrahydro-quinoline

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Reaction Steps

A solution of 5-chloro-2-methoxybenzenesulfonyl chloride (2.75 g, 11.20 mmol) in dichloromethane (0.15 L) was treated with pyridine (14.59 mL, 181.26 mmol) and a solution of 7-nitro-1,2,3,4-tetrahydro-quinoline (1.90 g, 10.66 mmol) in dichloromethane (6.00 mL). The mixture was stirred at room temperature for 120 hours, then the volatiles were evaporated. The residue was redissolved in dichloromethane and washed with water. The organic phase was dried over magnesium sulphate and evaporated. The residue was purified by flash chromatography (dichloromethane/methanol gradient) to yield 1-(5-chloro-2-methoxy-benzenesulfonyl)-7-nitro-1,2,3,4-tetrahydro-quinoline as an orange solid, 3.46 g (85%), MS (ISP): m/e=383.1 (M+H).

Provenance & Evidence