The formation of the stable phosphonium ions from polyfluoroaromatic phosphines of C6F5PX2 type [X = H, CH3, C6H5, C6F5, Cl, F, NCS, CN, OCH3, N(C2H5)2] in HSO3FSbF5 (1:1) at −70 to −1O°C has been shown, as well as the transformation of the investigated phosphines in HSO3F at 20°C into the pentavalent phosphorus derivatives.The same processes take place also for the trivalent arsenic and antimony
由C 6 F 5 PX 2型[X = H,CH 3,C 6 H 5,C 6 F 5,Cl,F,NCS,CN,OCH 3,N(C 2 ħ 5)2 ]中HSO 3 FSbF 5(1:1)在-70至-10℃的已被示出,以及在HSO的被调查膦的转化3F在20°C时生成五价磷衍生物,三价砷和锑衍生物也进行相同的过程。已经讨论了后者反应的可能途径以及决定因素。在HSO 3中由C 6 F 5 P(OCH 3)2和C 6 F 5 P(CN)2异常形成五氟苯膦酸二氟酸酐的质子化形式已找到F。已证明在-60°C下由强酸中的多氟亚硝基苯生成亚硝酸根阳离子。在相同的介质中于20°C,这些阳离子发生氧化,生成相应的硝基苯。研究了介质酸度对亚硝基苯反应的影响。
ENAMINE COMPOUND AND USE THEREOF
申请人:JAPAN SCIENCE AND TECHNOLOGY AGENCY
公开号:US20200087245A1
公开(公告)日:2020-03-19
Provided are a donor-acceptor type compound having a novel structure and its use.
An enamine compound represented by general formula (1)
(in the formula:
R
1
represents an electron-withdrawing group;
A represents a divalent aromatic hydrocarbon group which may contain a substituent, a divalent aromatic heterocyclic group which may contain a substituent or a divalent unsaturated aliphatic hydrocarbon group which may contain a substituent;
R
2
represents a hydrogen atom or a hydrocarbon group which may contain a substituent;
R
3
and R
4
are the same or different from each other and represent an aromatic hydrocarbon group which may contain a substituent or an aromatic heterocyclic group which may contain a substituent, or R
3
and R
4
together form an optionally substituted bicyclic aromatic heterocyclic group containing two or more nitrogen atoms or a nitrogen atom and an oxygen atom or a sulfur atom, or a tricyclic aromatic heterocyclic group which may contain a substituent; and
R
2
and A, or R
2
and R
3
may together form a cyclic structure).
The appropriate design of a ligand (L) in IrCl(CO)(L)(2) (4) realized the efficient synthesis of pi-conjugated enamines possessing hole-transport properties. The iridium complex with electron-withdrawing phosphorus ligands catalyzed the hydrosilylation of amides to the corresponding silylhemiaminals, which were transformed to the enamines by heat or by treatment with acids. High catalytic efficiency (TON > 10,000) was achieved, which made it possible for the residual iridium in the enamine product to be below 20 ppb.
Mironov, V.F.; Sinyashina, T.N.; Ofitserov, E.N., Russian Journal of General Chemistry, 1994, vol. 64, # 8.2, p. 1225 - 1227