2-syn,3-syn,5-syn,6-syn-tetrakis(hydroxymethyl)bicyclo[2.2.2]octane 、
2-<2'-(4''-chlorobutyl)-5'-(tetrahydropyran-2'''-yloxy)methyl>phenyl-1,3-dioxolane 在
sodium hydride 、 potassium iodide 作用下,
生成 2-syn, 3-syn, 5-syn, 6-syn-tetrakis<4'-<2''-(1''',3'''-dioxolan-2'''-yl)-4''-(2'''-tetrahydro-2H-pyranyloxymethyl)phenyl>butoxymethyl>bicyclo<2.2.2>octane