2-碘代丙烷 、 3-methyl-4-{[3-(trifluoromethyl)-7,8-dihydro-1,6-naphthyridin-6(5H)-yl]carbonyl}-1-oxa-8-azaspiro[4.5]dec-3-en-2-one hydrochloride 在
potassium carbonate 作用下,
以
乙腈 为溶剂,
以70%的产率得到8-isopropyl-3-methyl-4-{[3-(trifluoromethyl)-7,8-dihydro-1,6-naphthyridin-6(5H)-yl]carbonyl}-1-oxa-8-azaspiro[4.5]dec-3-en-2-one