Reactions of low-valent metal complexes with fluorocarbons. Part XVII. Tertiary arsine–nickel complexes
作者:Jane Browning、M. Green、F. G. A. Stone
DOI:10.1039/j19710000453
日期:——
(PhMe2As)4Ni to give (PhMe2As)2[graphic omitted]. The complex [o-C6H4(AsMe2)2][graphic omitted], prepared from 1,5-C8H12[graphic omitted], reacts with (CF3)2CO and with (CF3)2CNH to form the five-membered ring compounds [o-C6H4(AsMe2)2] [graphic omitted] (X = O or NH). Bis-(π-2-methylallyl)nickel and tetrafluoroethylene react to form a complex containing two C2F4 groups per nickel atom.
用四氟乙烯或三氟乙烯处理L 4 Ni [L = PhAsMe 2,L 2=o- C 6 H 4(AsMe 2)2 ]分别得到稳定的化合物[省略图示]和[省略图示]。氯和溴代三氟乙烯与(PhMe 2 As)4 Ni反应,得到乙烯基化合物(PhMe 2 As)2 Ni(CF:CF 2)X(X = Cl或Br)。类似地,1,1-二氯-2,2-二氟乙烯和1,2-二氯-1,2-二氟乙烯得到(PhMe 2 As)2 Ni(CCl:CF 2)Cl和(PhMe2 As) 2 Ni(CF:CFCl)Cl分别为顺式和反式乙烯基异构体的混合物。六氟丁酸酯-1,3-二烯与(PhMe 2 As) 4 Ni反应,得到(PhMe 2 As) 2 [省略图示]。由1,5-C 8 H 12 [省略图]制备的络合物[ o -C 6 H 4(AsMe 2) 2 ] [省略图]与(CF 3) 2 CO和(CF 3) 2反应。 CNH形成五元环化合物[
Z–E isomerisation of N-sulphenylimines
作者:Charles Brown、B. Terence Grayson、Robert F. Hudson
DOI:10.1039/p29790000427
日期:——
The free energies of Z–E isomerisation of a wide range of symmetrical N-sulphenylimines have been measured at the coalescence temperature by a 1H n.m.r. procedure. In two cases the rate of isomerisation of unsymmetrical N-sulphenylimines at a series of temperatures has been measured and activation enthalpies and entropies determined. The effect of substituents on the isomerisationbarrier ΔG* has been
已通过1 H nmr程序在聚结温度下测量了各种对称N-磺基苯亚胺的Z - E异构化的自由能。在两种情况下,已经测量了在一系列温度下非对称N-磺苯基亚胺的异构化速率,并确定了活化焓和熵。取代基对异构化势垒ΔG的影响*可以通过氮孤对与亚胺碳和氮上取代基的超共轭转化来解释,该取代以线性转变态用于转化过程。使用扩展的Hückel扰动方法以轨道方式讨论了结果,该方法可用于定性地解释取代基对广泛的亚氨基化合物(包括胍和亚氨基碳酸酯)的反转势垒的影响。
Novel β-hydroxy-β-bis(trifluoromethyl) imines
作者:Jan Alexander Barten、Enno Lork、Gerd-Volker Röschenthaler
DOI:10.1016/j.jfluchem.2003.09.008
日期:2004.6
Selected imines reacted with hexafluoroacetone non-catalyzed at ambient temperature to give β-hydroxy-β-bis(trifluoromethyl) imines in good to excellent yields. For the imines of acetone, pentan-3-one, and of cyclohexanone a 1:2 reaction was observed giving iminodiols; for N,N′-bis(propylidene)ethylene diamine an iminotetrol was formed. The diol derivative of N-isopropyl-propylidene amine could be
Polyfluoro N-aryloxaziridines. Synthesis and thermal rearrangement
作者:Viacheslav A. Petrov、Darryl D. DesMarteau
DOI:10.1016/0022-1139(96)03404-5
日期:1996.4
N-perfluoroaryl imines by m-chloroperoxybenzoic acid (MCPBA) in sulfolane leads to the formation of the corresponding oxaziridines in 60%–90% yield. At elevated temperature the N-aryloxaziridines readily rearrange into the respective N-arylamides of chlorodifluoro- and trifluoro-acetic acid.
Reaction of imines of fluorinated ketones and perfluoronitriles with carbon tetrachloride. A new route to polyfluorinated imines
作者:Viacheslav A Petrov
DOI:10.1016/s0022-1139(01)00361-x
日期:2001.7
The reaction of imines of hexafluoroacetone and 1,3-dichlorotetrafluoroacetone with CCl4 catalyzed by AlCl3 leads to the formation of (XCF2)2CClNCCl2 in moderate to high yield. The treatment of these imines with alkali metal fluoride in a polar solvent results in high yield formation of (XCF2)2CNCF3 along with isomeric (XCF2)2CFNCF2. A reaction of nitriles of perfluorinated carboxylic acids with
六氟丙酮和1,3- dichlorotetrafluoroacetone的亚胺与CCl反应4通过催化的AlCl 3所导致的形成(XCF 2)2 CClNCCl 2在中度到高收率。在极性溶剂中用碱金属氟化物处理这些亚胺会导致高产率地形成(XCF 2)2 C withNCF 3和异构体(XCF 2)2 CFN highCF 2。的全氟化羧酸腈与CCl反应4继续进行两种产物的混合物的形成,R ˚F的CCl 2 NCCl2和R f CCl 2 N = CClR f。在C 3 F 7 CN / CCl 4反应中分离出的亚氨酰氯C 3 F 7 CCl 2 N = CClC 3 F 7通过与HF反应而转化为全氟-5-氮杂壬烯-4。