The palladium-catalyzedcross-couplingreaction of tricyclopropylbismuth with aryl and heterocyclic halides and triflates is reported. The reaction tolerates numerous functional groups and does not require anhydrous conditions. The method was successfully extended to the cross-coupling of triethylbismuth.
Synthesis and characterization of [C5H5Fe(CO)2(ER3)]BF4 complexes (E = N, P, As, Sb and Bi): crystal structure determination of [C5H5Fe(CO)2(Bi(C6H5)3)]BF4
作者:Hans Schumann、Liliana Eguren
DOI:10.1016/0022-328x(91)83099-p
日期:1991.2
NMR and IR spectroscopy; The complex [C5H5Fe(CO)2(Bi(C6H5)3)]BF4 has also been characterized by X-ray crystallography and shown to have a three-legged piano-stool geomety at the iron atom with a FeBi distance of 2.570(1) Å. On the basis of NMR data, ligand substitution reactions, and comparison with results from the X-ray structures of related E(C6H5)3complexes (E = P, As and Sb) it is concluded that
Vb组供体配体ER 3(E = N,P,As,Sb和Bi; R = CH 3 C 2 H 5,iC 2 H 7和C 6 H 5)与[C 5 H 5 Fe(CO)2(THF)] BF 4在均相或非均相条件下以高收率得到[C 5 H 5 Fe(CO)2(ER 3 BF 4)配合物,还可以通过FeFe的氧化裂解获得这类配合物(Fe(C 5 H 5)(CO)2中的键] 2与ferricenium阳离子[(C 5 H ^ 5)2的Fe] +在ER的存在3。所有这些新的配合物都通过1 H,13 C,31 P NMR和IR光谱进行了表征。络合物[C 5 H 5 Fe(CO)2(Bi(C 6 H 5)3)] BF 4还通过X射线晶体学对其进行了表征,并显示在铁原子上具有三足的钢琴凳形几何学,FeBi距离为2.570(1)Å。根据NMR数据,配体取代反应以及与相关E(C 6 H 5)3配合物(E = P
Csp³-Csp² Palladium-Catalyzed Cross-Coupling Reaction of Trialkylbismuth Reagents with Aryl, Heteroaryl, and Vinyl Halides and Triflates
作者:Alexandre Gagnon、Martin Duplessis、Vincent Albert
DOI:10.1055/s-0030-1259023
日期:2010.12
The palladium-catalyzedcross-couplingreaction of tri-alkylbismuth reagents with aryl and heteroaryl halides and triflates is reported. Moderate to good yields were obtained for the transfer of primary alkylgroups. The reaction tolerates numerous functional groups on the electrophilic and nucleophilic partners. The cross-coupling of α-bromostyrene with tris(1,3-dioxan-2-ylethyl)bismuth is also reported
Triethylbismuth reacts with (C6F5)3GeH to give (C6F5)3GeBiEt2 and [(C6F5)3Ge]2BiEt and with (C6F5)2GeH2 to give [(C6F5)2GeBiEt]2. The presence of C6F5 radicals does not increase the stability of compounds (M = Ge, Sn). Their reactivity in the transmetallation reaction with mercury has been studied.
三乙基铋与(C 6 F 5)3 GeH反应得到(C 6 F 5)3 GeBiEt 2和[(C 6 F 5)3 Ge] 2 BiEt与(C 6 F 5)2 GeH 2反应得到[( C 6 F 5)2 GeBiEt] 2。C 6 F 5自由基的存在不会增加化合物的稳定性(M = Ge,Sn)。已经研究了它们在与汞的金属转移反应中的反应性。
Peroxides of elements other than carbon. Part XVII. The reaction of trialkylstibines and trialkylbismuthines with t-butyl hydroperoxide and with oxygen
作者:Alwyn G. Davies、Simon C. W. Hook
DOI:10.1039/j39710001660
日期:——
t-Butylhydroperoxide reacts with trialkylstibines, R3M, to give the corresponding stibine oxides, R3MO, but with trialkylbismuthines to give products such as RO·OBut, ROH, and ROR. Both reactions are thought to involve the intermediate metallonium ion R3MOH, which undergoes nucleophilic attack on H when M = Sb, and on R when M = Bi.