Beiträge zur chemie des bors XLVIII. Zur kenntnis von bis(dialkylboryl)aminen
作者:Heinrich Nöth、Heinrich Vahrenkamp
DOI:10.1016/s0022-328x(00)89761-2
日期:1969.3
Diborylamines of the types (R2B)2NH and (R2B)2NR′ (R = CH3, C2H5, C3H7, C4H9;R′ = CH3) are obtained (a) from dialkylhaloboranes and disilazanes, (b) from dialkylhaloboranes and N-metalated aminoboranes, and (c) by aminolysis of dialkyl(mthylthio)boranes. They are thermodynamically unstable with respect to a decomposition into trialkylboranes and borazine derivatives; their decomposition is catalysed
得到(R 2 B)2 NH和(R 2 B)2 NR'(R = CH 3,C 2 H 5,C 3 H 7,C 4 H 9 ; R'= CH 3)类型的二硼胺(a)来自二烷基卤庚烷和二硅氮烷,(b)来自二烷基卤庚烷和N-金属化的氨基硼烷,以及(c)通过二烷基(甲硫基)硼烷的氨解反应)。就分解成三烷基硼烷和硼嗪衍生物而言,它们在热力学上是不稳定的。它们的分解主要是由二烷基卤呋喃酮催化的。
Two different [1,3]-B shifts in phenalenyl(dipropyl)borane
作者:Oleg L. Tok、Ilya D. Gridnev、Elena M. Korobach、Yuri N. Bubnov
DOI:10.1039/a909574h
日期:——
Both possible [1,3]-B sigmatropic shifts are observed in the title compound; benzylic rearrangement to position 9 is much faster than allylic migration to position 3.
Boron and phosphorus chemistry. Part I. Simple, high-yield syntheses of pure chlorodiorganoboranes
作者:Leo F. Hohnstedt、James P. Brennan、Kennard A. Reynard
DOI:10.1039/j19700002455
日期:——
The reaction of R2BNH2(R = Bun or Prn) with phosphoruspentachloride and with hydrogen chloride gave chlorodiorganoboranes in high yields. Diethylaminodi-n-butylborane and phosphoruspentachloride produced chlorodi-n-butylborane. Separate experiments demonstrated that reaction of trialkylboranes to form R12BSR2 and then R12BNH2 followed by reaction with phosphoruspentachloride or hydrogen chloride
R 2 BNH 2(R = Bu n或Pr n)与五氯化磷和氯化氢的反应以高收率得到了氯二有机硼烷。二乙基氨基二正丁基硼烷和五氯化磷生产了氯二正丁基硼烷。单独的实验表明,三烷基硼烷反应生成R 1 2 BSR 2,然后生成R 1 2 BNH 2,然后与五氯化磷或氯化氢反应生成R 1 2 BCl,而无需分离中间体。
Les reactions de redistribution dans la chimie du bore. Etude des reactions de competition des groupements NMe2, Cl, SMe, OMe, F sur des centres bore mono et difonctionnels R2B- ET RB<
作者:J.P. Costes、G. Cros、J.P. Laurent
DOI:10.1016/s0022-328x(00)84547-7
日期:1979.8
A quantitative 1H and 11B NMR study of the redistributionequilibriabetween the NMe2 group and the Cl, SMe,OMe and F substituents on the mono and difunctional boron centers (R2B- and RB<) is reported. The preferential affinity of the amino group towards dialkylated boron centers is shown by the examination of the “intersystem” constant sets. A relative affinity scale is proposed.
报告了NMe 2基团与单和双官能硼中心(R 2 B-和RB <)上的Cl,SMe,OMe和F取代基之间重新分布平衡的定量1 H和11 B NMR研究。氨基对二烷基化硼中心的优先亲和力通过检查“系统间”常数集来显示。提出了相对亲和力量表。
Synthesis and Dynamic Properties of Cycloheptatrienyl(dipropyl)borane. Equilibrium with 7-Dipropylborylnorcaradiene
作者:Ilya D. Gridnev、Oleg L. Tok、Natalya A. Gridneva、Yuri N. Bubnov、Peter R. Schreiner
DOI:10.1021/ja9724699
日期:1998.2.1
The synthesis of cycloheptatrienyl(dipropyl)borane (2a) was accomplished via the exchange reaction of trimethyl(cycloheptatrienyl)tin (6) and dipropylchloroborane. Compound 2a was found by NMR spectroscopy to equilibrate with its valence tautomer 7-exo-(dipropylboryl)norcaradiene (2b). The equilibrium between 2a and 2b was studied in detail experimentally by variable temperature NMR and theoretically