2N-((N,N-dimethylamino)methylidene)-9-iodo-7N-(2-nitrophenylsulfonyl)-1N-(pivaloyloxy)methyl-9-deazaguanine 、
diethyl 1,1-difluoro-3-propynephosphonate 在
bis-triphenylphosphine-palladium(II) chloride 、
copper(l) iodide 、
三乙胺 作用下,
以
乙腈 为溶剂,
反应 2.0h,
以59%的产率得到9-[4',4'-difluoro-4'-(diethylphosphono)but-1'-ynyl]-2-N-(N,N-dimethylaminomethylidene)-7-N-(2-nitrophenyl)sulfonyl-1N-(pivaloyloxy)methyl-9-deazaguanine