tert-butyl 6'-chloro-1',2'-dihydrospiro[piperidine-4,3'-pyrrolo[3,2-c]pyridine]-1-carboxylate 、
2-chloro-4-(1,1-difluoroethyl)pyrimidine 在
9-{[5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl]diphenyl-λ
4-phosphanyl}-O-methanesulfonyl-8-methyl-8λ
4-aza-9-palladatricyclo[8.4.0.0
2,7]tetradeca-1(14),2,4,6,10,12-hexaene-9,9-bis(ylium)-10-uid-9-olate 、
caesium carbonate 作用下,
以
1,4-二氧六环 为溶剂,
以40%的产率得到tert-butyl 6'-chloro-1'-(4-(1,1-difluoroethyl)pyrimidin-2-yl)-1',2'-dihydrospiro[piperidine-4,3'-pyrrolo[3,2-c]pyridine]-1-carboxylate