2888-11-1Relevant articles and documents
MeOH or H2O as efficient additive to switch the reactivity of allylSmBr towards carbonyl compounds
Li, Jianyong,Niu, Qingsheng,Li, Shanchan,Sun, Yuehao,Zhou, Qian,Lv, Xin,Wang, Xiaoxia
supporting information, p. 1250 - 1253 (2017/03/10)
A variety of carbonyl compounds were treated by allylSmBr (allylSmBr) with MeOH as the cosolvent to have further insights on the previously reported reductive coupling of aryl ketones mediated by Sm/alkyl halide/MeOH. The results demonstrate that the real reducing species in Sm/alkyl halide/MeOH system should be allylSmBr, and MeOH has elegantly switched the reactivity of allylSmBr from being nucleophilic to being good reductive coupling reagent. Besides, H2O was also found to be a useful additive to realize the pinacol coupling of aliphatic aldehydes and ketones promoted by allylSmBr.
Use of electrochemistry to provide efficient SmI2 catalytic system for coupling reactions.
Sun, Linhao,Sahloul, Kamar,Mellah, Mohamed
, p. 2568 - 2573 (2013/11/19)
Samarium metal has been used for the first time as electrode material to perform as an efficient and versatile SmI2 catalytic system assisted by electrochemistry. The established electrocatalytic procedure that excludes any metal additives was successfully applied in various transformations mediated by this useful reagent.
Study of I-strain relief in the intermediate when forming spiro ketones from unsymmetrical cycloalkylidenecycloalkanes, their dibromides, and their pinacols
Sands
, p. 468 - 471 (2007/10/02)
Three unsymmetrical intercyclic olefins, their dibromides, and their pinacols were prepared, each so the two carbons involved at the functional group were part of a different sized ring. The pinacols were reacted with 25% sulfuric acid and with boron trif