X = pseudohalogen = CN, N3, NCO, NCS, and PCO) utilizing a phosphorus-centered cyclic biradicaloid, [P(μ-NTer)]2, is reported. These formal Brønsted acids were generated in situ as gases and passed over the trapping reagent, the biradicaloid [P(μ-NTer)]2, leading to the formation of the addition product [HP(μ-NTer)2PX] (successful for X = CN, N3, and NCO). In addition to this direct addition reaction
据报道,利用以磷为中心的环状双自由基,[P(μ-NTer)] 2捕集经典的拟卤化氢(HX,X =拟卤素= CN,N 3,NCO,NCS和PCO)。这些形式的布朗斯台德酸作为气体原位产生,并通过捕集剂双自由基[P(μ-NTer)] 2,导致形成加成产物[HP(μ-NTer)2 PX]( X = CN,N 3和NCO)。除了这种直接加成反应之外,还应用了两步过程,因为我们未能分离出HPCO和HNCS加成产物。此两步过程包括生成和分离高反应性[HP(μ-NTer)2 PX]+阳离子作为[B(C 6 F 5) 4 ] -盐,然后与诸如[cat] X(cat = PPh 4, n -Bu 3 NMe)的盐进行盐复分解,这也会得到所需的[HP( μ-NTER) 2 PX]的产品,与PCO中的反应除外-盐。在这种情况下,观察到质子迁移,最终形成[3.1.1]-异丙炔型笼状化合物,即HPCO加合物的OC(
[DE] VERFAHREN ZUR HERSTELLUNG VON 4-CYANO-3-HYDROXYBUTTERSÄUREESTERN<br/>[EN] METHOD FOR PRODUCING 4-CYANO-3-HYDROXYBUTYRIC ACID ESTERS<br/>[FR] PROCEDE POUR PRODUIRE DES ESTERS DE L'ACIDE 4-CYANO-3-HYDROXYBUTYRIQUE
申请人:BAYER CHEMICALS AG
公开号:WO2005005375A1
公开(公告)日:2005-01-20
Bereitgestellt wird ein Verfahren zur Herstellung von 4-Cyano- 3-hydroxybuttersäureestem durch Umsetzung eines 4-substituierten 3-Hydroxybuttersäureesters mit einern Cyanidsalz in einern organischen Lösungsmittel in Gegenwart eines oder mehrerer weiterer Salze.
The chemistry of arsenic cyanides has been investigated and is found to be completely different to the chemistry of the heavier analogs antimony and bismuth as well as phosphorus. The reaction of As(CN)3 with cyanide salts resulted in the formation of an unknown cyanido arsazolide heterocycle, which represents a structure isomer of the desired [As(CN)4]−. The structure, bonding, and formation of this
已研究了氰化砷的化学性质,发现其与较重的类似物锑和铋以及磷的化学性质完全不同。As(CN)3与氰化物盐的反应导致形成未知的氰基亚硝唑啉杂环,该杂环代表所需的[As(CN)4 ] -的结构异构体。讨论了这种不寻常的杂环的结构,键和形成,其特征是砷介导的氰化物的C-C偶联。[AsC 4 N 4 ] -具有不同抗衡离子的盐,例如[PPh 4 ] +,[PPN] + = [Ph 3 P‐ N‐PPh 3 ] +,Ag +和[BMIm] +报告为[BMIm] [AsC 4 N 4 ]为低温离子液体(T m = -62°C)。
Cyanido Antimonate(III) and Bismuthate(III) Anions
[Ph4P]CN and [PPN]CN ([PPN]+ = [Ph3P–N–PPh3]+) was studied, affording salts bearing the novel ions [E(CN)5]2–, [Bi2(CN)11]5–, and [Bi(CN)6]3–. The valence lone pair of electrons on the central atom of antimony and bismuth(III) compounds can be either sterically active in an unsymmetric fashion (three shorter bonds + x longer bonds) or symmetric (with rather long averaged bonds). In the presence of weakly coordinating
Oxidation of carbon monoxide in basic solution catalyzed by nickel cyano carbonyls under ambient conditions and the prototype of a CO-powered alkaline fuel cell