Diboron Tetrachloride and Tetrafluoride as Reagents for the Synthesis of Organoboron Compounds. II. The Behavior of the Diboron Tetrahalides toward Unsaturated Organic Compounds1
Halogen exchange reactions of diboron tetrahalides
作者:J. J. Ritter、T. D. Coyle
DOI:10.1039/j19700001303
日期:——
Halogenexchange between BCl3 and B2F4 at room temperature occurs in such a way as to concentrate chlorine on the diboron fragment and thus provides a convenient procedure for preparation of B2Cl4 in > 80% yield. Halogenexchange between B2Cl4 and Me2BF leads, however, to formation of B2F4 and Me2BCl. I.r. and n.m.r. spectra indicate the presence of hitherto undetected diboron chlorofluorides in this
室温下BCl 3和B 2 F 4之间的卤素交换以将氯浓缩在二硼片段上的方式发生,因此为制备B 2 Cl 4的收率> 80%提供了便利的程序。但是,B 2 Cl 4和Me 2 BF之间的卤素交换导致形成B 2 F 4和Me 2 BCl。Ir和nmr光谱表明该系统以及B 2 F 4 –B 2 Cl 4和BF 3中迄今未检测到的二硼化氯氟化物的存在。–B 2 Cl 4混合物。
Synthesis by use of molecular carbon. Part I. Boron halides
作者:J. E. Dobson、P. M. Tucker、F. G. A. Stone、R. Schaeffer
DOI:10.1039/j19690001882
日期:——
Carbon vapour generated from a carbon arc has been co-condensed with various boron halides. In this manner diborontetrachloride afforded a mixture of C(BCl2)4, ClC(BCl2)3, and Cl2C(BCl2)2; and borontrichloride yielded the last two compounds as well as Cl(Cl2B)C:C(BCl2)Cl. Diboron tetrafluoride and carbon vapour reacted to give species derived from C1, C2 and C3 molecules, viz., (F2B)4C, (F2B)2C:C(BF2)2
Reactions of diboron tetrahalides with some unsaturated organometallic compounds
作者:T.D. Coyle、J.J. Ritter
DOI:10.1016/s0022-328x(00)93848-8
日期:1968.5
Tetrachloro- and tetrafluorodiborane(4) add to the double bond in a number of vinyl derivatives of boron, carbon, silicon, germanium, and tin to form 1,2-bis(dihaloboryl)ethyl derivatives. Most of the compounds are stable in vacuo at temperatures in excess of 150°. Tetrachlorodiborane(4) undergoes addition considerably more readily than does tetrafluorodiborane(4). Relative rates of addition have been determined
Simple solution-phase syntheses of tetrahalodiboranes(4) and their labile dimethylsulfide adducts
作者:Merle Arrowsmith、Julian Böhnke、Holger Braunschweig、Andrea Deißenberger、Rian D. Dewhurst、William C. Ewing、Christian Hörl、Jan Mies、Jonas H. Muessig
DOI:10.1039/c7cc03148c
日期:——
solution-phase syntheses of tetrahalodiboranes(4) B2F4, B2Cl4 and B2I4 are presented herein from common precursor B2Br4. In addition, the dimethylsulfide adducts B2Cl4(SMe2)2 and B2Br4(SMe2)2 are conveniently prepared in one-step gram and multigram scale syntheses from the commercially-available starting material B2(NMe2)4. The results provide simple access to the full range of tetrahalodiboranes(4) for the
Reactivity of Tetrahalo- and Difluorodiboranes(4) toward Lewis Basic Platinum(0): Bis(boryl), Borylborato, and Doubly Boryl-Bridged Platinum Complexes
作者:Jonas H. Muessig、Dominic Prieschl、Andrea Deißenberger、Rian D. Dewhurst、Maximilian Dietz、J. Oscar C. Jiménez-Halla、Alexandra Trumpp、Sunewang R. Wang、Carina Brunecker、Alena Haefner、Annalena Gärtner、Torsten Thiess、Julian Böhnke、Krzysztof Radacki、Rüdiger Bertermann、Todd B. Marder、Holger Braunschweig
DOI:10.1021/jacs.8b08428
日期:2018.10.10
9-anthryl) toward a range of platinum(0) complexes was investigated. Reactions with relatively nonbulky platinum(0) complexes led to the formation of unsymmetrical cis-bis(boryl) complexes cis-[(R3P)2Pt(BF2)(BMes2)] (6, R = Me; 7, R = Et) as well as the first example of a fourfold-unsymmetrical bis(boryl) complex, [(Me3P)(Cy3P)Pt(BF2)(BMes2)] (12). The use of a more bulky Pt complex provided access to the