trans tert-Butyl N-(3-aminocyclobutyl)carbamate 、
methyl (2-chloro-5-fluoropyridin-3-yl)(methyl)carbamate 在
chloro[2-(dicyclohexylphosphino)-3,6-dimethoxy-2′,4′,6′-tri-1-propyl-1,1′-biphenyl][2-(2-aminoethyl)phenyl]palladium(II) 、
sodium t-butanolate 作用下,
以
1,4-二氧六环 为溶剂,
反应 0.5h,
以47.4%的产率得到tert-butyl (trans-3-(6-fluoro-1-methyl-2-oxo-1H-imidazo[4,5-b]pyridin-3(2H)-yl)cyclobutyl)carbamate