Facile Synthesis of (3,5-(CF3)2C6H3)2BX (X = H, OMe, F, Cl, Br): Reagents for the Introduction of a Strong Boryl Acceptor Unit

被引：27

作者：

Samigullin, Kamil ^{[1
]}

Bolte, Michael ^{[1
]}

Lerner, Hans-Wolfram ^{[1
]}

Wagner, Matthias ^{[1
]}

机构：

[1] Goethe Univ Frankfurt, Inst Anorgan & Analyt Chem, D-60438 Frankfurt, Germany

来源：

ORGANOMETALLICS | 2014年 / 33卷 / 13期

关键词：

LIGANDS; BIS(PENTAFLUOROPHENYL)BORANE; GENERATION; REACTIVITY; COMPLEXES; ACID;

D O I：

10.1021/om500476d

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of (3,5-(CF3)(2)C6H3)Li ((Fxyl)Li) with BH3 center dot SMe2 in Et2O furnishes Li[(Fxyl)BH3] in an essentially quantitative yield. Hydride abstraction with Me3SiCl followed by the addition of a second equivalent of (Fxyl)Li gives Li[(Fxyl)(2)BH2] in 71% yield. Treatment of Li[(Fxyl)(2)BH2] with 1 equiv of Me3SiCl and a subsequent targeted methanolysis provide access to the methoxyborane (Fxyl)(2)BOMe. The latter compound serves as starting material for the synthesis of the haloboranes (Fxyl)(2)BX (X = F, Cl, Br) through the reaction with KHF2/Me3SiCl, BCl3, and BBr3, respectively. All three haloboranes, as well as key synthesis intermediates, have been structurally characterized by X-ray crystallography.

引用

页码：3564 / 3569

页数：6

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