Triethylamine → Tert-butyl 2-[(2-chloro-3-nitroquinolin-4-yl)amino]ethylcarbamate

Participants

Reaction Steps

Triethylamine (30.98 g, 306.1 mmol) was added to a solution of 2,4-dichloro-3-nitroquinoline (50.0 g, 204 mmol) in DMF (200 mL). A solution of N-Boc-ethylenediamine (32.7 g, 204 mmol) in DMF (100 mL) was then added in small portions. The reaction was stirred at room temperature, and then most of the DMF was removed under reduced pressure. Water (600 mL) was added to the residue, and the mixture was stirred for three hours. A solid formed and was isolated by filtration, washed with water, and dried under house vacuum to provide 71 g of tert-butyl 2-[(2-chloro-3-nitroquinolin-4-yl)amino]ethylcarbamate as a yellow solid. A portion of the material (15 g) was dissolved in dichloromethane (200 mL), and the resulting solution was washed with brine (2×100 mL) and deionized water (2×100 mL), dried over magnesium sulfate, filtered, concentrated under reduced pressure, and further dried on a vacuum pump for three days to provide 13.99 g of product.

Provenance & Evidence