1,2,3,4-Tetrahydroisoquinoline → 4-nitrophenyl 3,4-dihydroquinoline-1(2H)-carboxylate

Participants

Reaction Steps

To a solution of tetrahydroisoquinoline (3.99 g, 30 mmol) in triethyl amine(6 g, 60 mmol) and dichloromethane(150 mL) cooled in ice bath was added p-nitrophenyl chloroformate (6.06 g, 30 mmol) drop wise over a period of 1 h. The reaction mixture was stirred at room temperature for 3 h and then washed with water (3×100 mL), dried over sodium sulfate and concentrated to afford an oil which was triturated with ether:hexane to afford the titled compound as yellow solid (5.9 g, 65%).

Provenance & Evidence