、
7-甲氧基喹噁啉-2(1h)-酮 、
3-(甲烷磺酰氧基甲基)氮杂丁烷-1-羧酸叔丁酯 以3-(7-methoxy-quinoxalin-2-yloxymethyl)-azetidine-1-carboxylic acid tert-butyl ester (O-alkylation, less polar product) was obtained as a yellow oil (1.07 g; 55% yield)的产率得到3-(7-methoxy-quinoxalin-2-yloxymethyl)-azetidine-1-carboxylic acid tert-butyl ester