1-溴戊烷 、
(η5-trimethylsilylcyclopentadienyl)(1-ethyl-1,4,7-triphosphacyclononane)iron(II) tetrafluoroborate 在
potassium tert-butoxide 作用下,
以
四氢呋喃 为溶剂,
以62%的产率得到(η5-cyclopentadienyl)(1,4-dipentyl-7-ethyl-1,4,7-triphosphacyclononane)iron(II) bromide/hexafluorophosphate