一氧化碳 、
3',5'-Difluoro-4-hydroxy-5-(1-hydroxy-cyclopentylethynyl)-biphenyl-3-carboxylic acid [2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-amide 在
bis-triphenylphosphine-palladium(II) chloride
1,3-双(二苯基膦)丙烷 、
cesium acetate 作用下,
以
乙腈 为溶剂,
以76%的产率得到N-[2-[tert-butyl(dimethyl)silyl]oxyethyl]-7'-(3,5-difluorophenyl)-1'-oxospiro[cyclopentane-1,3'-furo[3,4-b][1]benzofuran]-5'-carboxamide