5,7-difluoroquinoxalin-2(1H)-one 、
6,8-difluoroquinoxalin-2(1H)-one 、
sodium;hydride 、 6-[({1-[2-(7-fluoro-2-oxo-1(2H)-quinolinyl)ethyl]-4-piperidinyl}amino)methyl]-2H-pyrido[3,2-b][1,4]oxazin-3(4H)-one 、
{1-[2-(7-methoxy-2-oxo-2H-quinolin-1-yl)-ethyl]-piperidin-4-yl}-carbamic acid tert-butyl ester 在
tert-butyl {1-[2-(5,7-difluoro-2-oxoquinoxalin-1(2h)-yl)ethyl]piperidin-4-yl}carbamate 作用下,
以
乙醚 为溶剂,
以yielding 0.73 g of tert-butyl {1-[2-(5,7-difluoro-2-oxoquinoxalin-1(2H)-yl)ethyl]piperidin-4-yl}carbamate (Intermediate 193)的产率得到tert-butyl {1-[2-(5,7-difluoro-2-oxoquinoxalin-1(2h)-yl)ethyl]piperidin-4-yl}carbamate