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Phosphonium salt is a key intermediate for manufacture of some types of prostaglandins, which are subsequently used as active ingredients of both human and veterinary drugs.
Yoshinori Yamamoto.; Toshiaki Komatsu.; Kazuhiro Maruyama. Diastereofacial selectivity in the reaction of allylic organometallic compounds with imines. Stereoelectronic effect of imine group.J. Org. Chem. 1985, 50 (17),3115-3121.
Robert Deschenaux.; Martin Schweissguth.; Maria-Teresa Vilches. Switchable Mesomorphic Materials Based on the Ferrocene-Ferrocenium Redox System:? Electron-Transfer-Generated Columnar Liquid-Crystalline Phases. Organometallics. 1999, 18 (26),5553-5559.
Use of LiHMDS as base in the Wittig reaction with aromatic aldehydes gives a much higher proportion of the trans-alkene than alternative bases such as dimsyl sodium or KO-t-Bu: Tetrahedron Lett., 22, 4185 (1981). See Appendix 1.