Allyllithium Allylmagnesium bromide

The octamethyldimolybdate(4—) anion can be prepared from the reaction of Mo2(02CCH3)4 and UCH3 in ether (114). The tetraallyldimolybdenum compound prepared by Wilke et al. (254) is also readily synthesized from tetraacetatodimolybdenum and allyllithium or allylmagnesium bromide (114). A... 

Treatment of enantiomerically pure cyclic sulfonimidates 6 and 7 with allyllithium or allylmagnesium bromide gives optically active allylic sulfoximines 8 and 9 (R = allyl) as described in Section II.A.13 The reactions of /V-phenyl-S-(methyl-phenyl)sulfoximidoyl chloride 109 with allyltrimethylsilane or allyltributylstan-... 

Thus, the reaction of glycal epoxides with strong nucleophiles, such organocuprates, allylmagnesium bromide, and allyllithium, did not require the use of Lewis acid and proceeded with the formation of l,2-tra s-C-glycosides. 

---