3-(R)-氟吡咯烷(HCL) 、
(S)-3-bromo-7-(2-fluoropyridin-3-yl)-2',6'-dihydrospiro[chromeno[2,3-b]pyridine-5,3'-[1,4]oxazin]-5'-amine 、
lithium hexamethyldisilazane 在
Dicyclohexyl-[2-[2,6-di(propan-2-yloxy)phenyl]phenyl]phosphane;2-methoxy-2-methylpropane;palladium(2+);2-phenylethanamine;chloride
甲醇 、 crude residue 、 Dichloromethane methanol ammonium hydroxide 、
二氯甲烷 作用下,
以
四氢呋喃 为溶剂,
反应 18.0h,
以gave (S)-7-(2-fluoropyridin-3-yl)-3-((R)-3-fluoropyrrolidin-1-yl)-2′,6′-dihydrospiro[chromeno[2,3-b]pyridine-5,3′-[1,4]oxazin]-5′-amine (0.018 g, 0.040 mmol, 35.3% yield)的产率得到(S)-7-(2-fluoropyridin-3-yl)-3-((R)-3-fluoropyrrolidin-1-yl)-2',6'-dihydrospiro[chromeno [2,3-b]pyridine-5,3'-[1,4]oxazin]-5'-amine