New reactions of fluoroepoxides. Cleavage by trialkyl phosphites
作者:A.A. Kadyrov、G.G. Bargamov、E.M. Rokhlin
DOI:10.1016/s0022-1139(00)80854-4
日期:1993.12
Mono-, di- and tri-substituted fluorine-containing α-oxides have been shown to enter into reactions with trialkylphosphites which proceed through cleavage of the CC and CO bonds in the epoxide ring. The trialkoxyphosphorus ylides II, V, VII and VIII were obtained from the epoxides I, IV, VII and XVI. Triethoxyfluorocarbonylfluorophosphorane (IIIb) has been isolated and characterized. Further conversions
Ethyl-Zinc(II)-Cation Equivalents: Synthesis and Hydroamination Catalysis
作者:T. O. Petersen、E. Tausch、J. Schaefer、H. Scherer、P. W. Roesky、I. Krossing
DOI:10.1002/chem.201502328
日期:2015.9.21
Ion‐like ethylzinc(II) compounds with weakly coordinating aluminates [Al(ORF)4]− and [(RFO)3Al‐F‐Al(ORF)3]− (RF=C(CF3)3) were synthesized in a one‐pot reaction and fully characterized by single‐crystal X‐ray diffraction, NMR and vibrational spectroscopy, and by quantum chemical calculations. The catalytic activity of ion‐like Et‐Zn[Al(ORF)4] in intermolecular hydroamination and in the unusual double
具有弱配位铝酸盐[Al(OR F)4 ] -和[(R F O)3 Al-F-Al(OR F)3 ] -(R F = C(CF 3)3)是通过一锅法合成的,并通过单晶X射线衍射,NMR和振动光谱以及量子化学计算进行了全面表征。离子状Et-Zn [Al(OR F)4的催化活性进行了分子间加氢和苯胺和炔烃的非常规双加氢反应。与在2.5摩尔%的较低催化剂负载量下原位生成的Et 2 Zn / [PhNMe 2 H] + [B(C 6 F 5)4 ] -体系相比,也发现了良好的性能。
As–P vs. P–P Insertion in AsP
<sub>3</sub>
: Kinetic Control of the Formation of [AsP
<sub>3</sub>
NO]
<sup>+</sup>
作者:Tobias A. Engesser、Wesley J. Transue、Philippe Weis、Christopher C. Cummins、Ingo Krossing
DOI:10.1002/ejic.201900267
日期:2019.6.10
The synthesis of mixed arsenic phosphoruscations was investigated on theoretical and experimental grounds by replacing P4 with AsP3 in the known syntheses of [P4NO]+ and [P9]+. Calculations of [AsP3NO]+ and [AsP8]+ showed that 1‐[AsP3NO]+ and 3‐[AsP8]+ should be the most stable isomers. However, 2‐[AsP3NO]+ was prepared by reacting [NO]+[Al(ORF)4]– (RF = C(CF3)3) with AsP3 with a regioselectivity
在理论和实验基础上,通过在已知的[P 4 NO] +和[P 9 ] +合成中用AsP 3代替P 4,研究了混合砷磷阳离子的合成。对[AsP 3 NO] +和[AsP 8 ] +的计算表明,1- [AsP 3 NO] +和3- [AsP 8 ] +应该是最稳定的异构体。但是,通过[NO] + [Al(OR F)4 ]的反应制备了2- [AsP 3 NO] +–(R F = C(CF 3)3)和AsP 3,区域选择性为45:1。通过计算完整的反应机理证明了该反应的动力学控制。在CCSD上检查[As x P 4–x NO] +(x = 0,1,4)和[As x P 9-x ] +(x = 0,1,9)的形成能。 T)/完全基准设定极限水平表明,对于[As x P 4–x NO] +(x = 0,1,4),磷被砷替代会导致更多的能形成能量。对于[As x P9‐x ] +团簇(x = 0,1,9),与[P
Monophospha-S-triazines of improved hydrolytic and thermal oxidative
申请人:Lubricating Specialties Co.
公开号:US05326910A1
公开(公告)日:1994-07-05
Hydrolytically and thermooxidatively stable monophospha-s-triazines prepared by reaction of octafluoroisobutylene epoxide with an acid fluoride followed by transformation of the resultant product into an amide, then into a nitrile, reacting the nitrile with ammonia and reacting the imidoylamidine resulting from the previous steps with di-aryltrihalophosphorane to produce mono-phospha-s-triazines that are useful as antioxidant - anticorrosion agents for perfluoroalkylether fluids are disclosed.