Preparation and Reaction of Lanthanide(II) Trifluoromethanesulfonates

Twenty five years of organic chemistry with diiodosamarium

“…Besides organic transformations of middle-size molecules, SmI 2 found some applications in polymer chemistry [58]. A number of analogues of SmI 2 were synthesized and screened for their reducing properties such as SmBr 2 [59,60] or Sm(OTf) 2 [61][62][63]. Other divalent lanthanide reagents have been recently prepared and compared to samarium diiodide [64][65][66].…”

Controlled introduction of allylic group to chlorosilanes

“…For example, the use of more reactive organolithium reagents rather than Grignard reagents, affords the trialkylsilane with bulky substituents [9]; the electrolysis of appropriate chlorosilanes gives the symmetrical difunctional disilanes in good yield [10]; palladium with SmI 2 -HMPA system catalyzed stereoselective synthesis of allylsilanes [11]. We found that when trisubstituted chlorosilanes (R 3 SiCl) were treated with allylsamarium bromide in THF at room temperature, allyl substituted organosilicons were obtained in good yields (Scheme 1).…”

Rare Earth Starting Materials and Methodologies for Synthetic Chemistry

“… 609 Another method for the preparation of Ln(OTf) 2 is the reduction of Ln(OTf) 3 with Grignard reagents, which has also been successfully employed for the preparation of Yb(OTf) 2 (THF) 3 ( Scheme 64 , D ). 610 The DME-solvate analogue, Yb(OTf) 2 (DME), has also been obtained from the reaction of HOTf with [Yb{N(SiMe 3 ) 2 } 2 (OEt 2 ) 2 ]. 611…”