The preparation of SmBr2 from Sm2O3 is described. This samarium (II) compound is a powerful one electron reluctant able to very efficiently mediate pinacolic couplings. Cross couplings are effective in some cases, for example a chiral diol can be obtained from benzophenone md camphor. Intramolecular pinacolization of a diketone has also been performed.
描述了由Sm 2 O 3制备SmBr 2。这种sa(II)化合物是一种功能强大的单电子,可以非常有效地介导Pinacolic偶联。交叉偶联在某些情况下是有效的,例如可以从
二苯甲酮md
樟脑获得手性二醇。还已经进行了二酮的分子内松解。