Dimethyl 2-[[2-(3-hydroxyprop-1-ynyl)phenyl]methylidene]propanedioate 、
2,2'-methylenebis(6-tert-butyl-4-methyl-o-phenylene) phosphorochloridite 在
三乙胺 作用下,
以
四氢呋喃 为溶剂,
以70%的产率得到dimethyl 7-(1,9-ditert-butyl-3,7-dimethyl-11-oxo-5H-benzo[d][1,3,2]benzodioxaphosphocin-11-yl)-1,2a-dihydrocyclobuta[a]indene-2,2-dicarboxylate