Sodium hydride → tert-butyl {1-[2-(7-bromo-5-fluoro-2-oxoquinolin-1(2H)-yl)ethyl]piperidin-4-yl}carbamate

Participants

Reaction Steps

A mixture of 5-bromo-7-fluoroquinolin-2(1H)-one and 7-bromo-5-fluoroquinolin-2(1H)-one (Intermediate 177 and 178, 3.0 g, 9.4 mmol) was reacted with sodium hydride (60% in oil, 0.20 g, 5.0 mmol) and 2-{4-[tert-butoxycarbonyl)amino]piperidin-1-yl}ethyl methanesulfonate (Intermediate 6, 9.4 mmol) as described for Intermediate 141. Chromatography on silica gel with a gradient of 50-75% ethyl acetate in hexanes gave 0.63 g (33%) of the regioisomeric product mixture, which was carried on without further purification to the next step.

Provenance & Evidence