A comparative study of base-free arylcopper reagents for the transfer of aryl groups to boron halides
作者:Anand Sundararaman、Frieder Jäkle
DOI:10.1016/s0022-328x(03)00588-6
日期:2003.9
A comparative study on the reactivity and selectivity of arylcopper species in reactions with boronhalides was performed. Mesitylcopper reacts with BX3 (X=Cl, Br) in toluene at low temperature under highly selective formation of the monosubstituted boranes MesBX2. The dimesitylboranes Mes2BX are gradually formed with a twofold excess of the organocopper reagent at elevated temperature. In contrast
对芳基铜与卤化硼反应的反应性和选择性进行了比较研究。Mesitylcopper在低温下与甲苯中的BX 3(X = Cl,Br)在高度选择性形成单取代硼烷MesBX 2的条件下反应。在升高的温度下,用两倍过量的有机铜试剂逐渐形成二聚三聚异戊二烯Mes 2 BX。相反,五氟苯基铜在与BX 3反应中显示出形成B(C 6 F 5)3的趋势。不管所用的化学计量如何,都表明电子因素对芳基转移反应的选择性有很大的影响。从碱合成五氟苯基硼卤化物C 6 F 5 BX 2(X = Cl:57%; X = Br:62%)以及三(五氟苯基)硼烷(80%)和相关的混合取代的三芳基硼烷的新方法无氟可分离的五氟苯基铜前体已被开发出来。
Dinitrogen-derived (diarylboryl)diazenido complexes with differing coordination to the thallium cation
To prepare N2-derived cationic boryldiazenido-tungsten complexes as models of semimetallic metal-borinium frustrated Lewis pairs activating N2, we have attempted halide abstraction from trans-(diarylboryl)diazenido-halo-tungsten complexes. Reactions with Tl+ led to adducts in which coordination of the cation differs depending on the boryldiazenide substituents and the ancillary ligand. Chloride scavenging
为了制备 N 2衍生的阳离子硼基二氮杂-钨配合物作为半金属金属-硼受挫路易斯对激活 N 2的模型,我们尝试从反式-(二芳基硼基)二氮杂-卤代-钨配合物中提取卤化物。与 Tl +的反应产生加合物,其中阳离子的配位取决于硼基二氮杂氮取代基和辅助配体。没有观察到氯化物清除。
Coates, G. E.; Livingstone, J. G., Journal of the Chemical Society
作者:Coates, G. E.、Livingstone, J. G.
DOI:——
日期:——
Catalytic Dehydrogenation of Amine‐Boranes using Geminal Phosphino‐Boranes
作者:Devin H. A. Boom、Ewoud J. J. de Boed、Emmanuel Nicolas、Martin Nieger、Andreas W. Ehlers、Andrew R. Jupp、J. Chris Slootweg
DOI:10.1002/zaac.201900313
日期:2020.7.15
The reaction of the intramolecular frustratedLewispair (FLP) tBu2PCH2BPh2 with the amine-boranes NH3·BH3 and Me2NH·BH3 leads to the formation of the corresponding FLP-H2 adducts as well as novel five-membered heterocycles that result from capturing the in situ formed amino-borane by a second equivalent of