... If an excess of LiOH was used, the reaction was accompanied with rearrangements and elimination. 6. 0. Mitsunobu, Synthesis, 1(1981). 7. R. Aneja, AP Davies and JA Knaggs, Tetrahedron lett., 1033(1975). 8. If an excess of Ph 3P is used, it must be destroyed before chromatography with DEAD. 9. This work was supported in part by NIH grant CA23094. (Received in USA 9 June 1982). References. 1. W.Clark Still, Igor Galynker. J. Am. Chem. ...