(1R)-2-carboxymethoxy-3-[[(trifluoromethyl)sulfonyl]oxy]-8-methyl-8-azabicyclo[3.2.1]oct-2-ene 、 [2-[2-[Tert-butyl(diphenyl)silyl]oxyethyl]phenyl]boronic acid 在
tris-(dibenzylideneacetone)dipalladium(0) 、
sodium carbonate 、 lithium bromide 作用下,
以
various solvent(s) 为溶剂,
以72%的产率得到(1R,5S)-3-{2-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-phenyl}-8-methyl-8-aza-bicyclo[3.2.1]oct-2-ene-2-carboxylic acid methyl ester