Electrophilic trifluoromethylation of simple inorganic salts: a one step route to trifluoromethylnitromethane, CF3NO2

Trifluoromethylnitromethane is readily synthesized in high yield from the electrophilic trifluoromethylation of NaNO₂.     

The Chemistry of Bunte Salts

Bunte salts can be obtained, not only from alkyl halides and sodium thiosulfate, but also from compounds containing activated multiple bonds, and sodium thiosulfate. The Bunte salts prepared by the new method, contrary to earlier observations, are cleaved by alkalis into the unsaturated starting compounds and sodium thiosulfate. This reaction, which is used for the fixation of unsaturated compounds (e.g. to cellulose), and other reactions of the Bunte salts are discussed. The industrial applications and biological properties of the Bunte salts are also mentioned.     

Synthesis of fluoroalkyl-containing β-hydroxyketones by reduction of the corresponding β-diketone derivatives

The rcgioselective synthesis of fluoroalkyl-containing P-hydroxyketones by the reduction of the salts of the corresponding -diketones with LiAlH₄ was proposed. This is the sole method for the synthesis of -hydroxyketones with two fluoroalkyl substituents.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1493–1495, June, 1996.     

Direct arylation of tetrazolo[1,5-a]pyridine and its benzenologues

Diphenyliodonium fluoroborate proved to be a suitable reagent for direct arylation of bridge head nitrogen containing fused heteroaromatic systems. By this one step method, 1-aryl-tetrazolo[1,5-a]pyridinium salt (3) can be obtained. Arylation of related benzenologues gave not only 1-aryl but also 2-aryltetrazolium salts.

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Direkte Arylierung von Teterazolo[1,5-a]pyridin und dessen Benzologen (Kurze Mitteilung)

Zusammenfassung Kondensierte Heteroaromaten mit Brückenkopf-Stickstoff können direkt mit Diphenyl-Jodonium Fluoroborat aryliert werden. In dieser Weise wird 1-Aryltetrazolo[1,5-a]pyridinium Salz (3) in einer Reaktionsstufe synthetisiert. Arylierung der verwandten Benzologen führten nicht nur zu 1-Aryl, sondern auch zu 2-Aryltetrazolium Salzen.

     

Met.(Cu,Ag)-TCNQ有机薄膜的EB CL像

自从1979年Potember等人首先发现了CuTCNQ有机薄膜具有受电流控制的电开关特性以来[1]，有关CuTCNQ及AgTCNQ这些阴离子基过渡金属盐（以下简称为Met．（CU、Ag）-TCNQ）有机薄膜的光存储特性、光电开关特性，以及某些气教特性的研究结果便不断报导出来[2-4]，引起人们极大的兴趣．作为很有前途的有机光电功能材料，至今对其电导及光电特性的机理研究仍显得十分薄弱，极大影响了它们进一步向实用器件方向的发展．由于CuTCNQ的晶体参数至今未见报导，我们依据CuTCNQ粉末X射线小角衍射谱对比AgTCNQ相应的粉末X射线衍射数据，…     

A powerful, practical and chemoselective synthesis of 2-anilinoalkanols catalyzed by Bi(TFA)3 or Bi(OTf)3 in the presence of molten TBAB

A facile and efficient synthesis of β-amino alcohols by ring opening of epoxides with anilines in good to excellent yields in the presence of catalytic amounts of Bi(TFA)₃ or Bi(OTf)₃ via the use of molten tetrabutylammonium bromide (TBAB) as an ionic liquid is described. In addition, the observed chemoselectivity can be considered as a noteworthy advantage of this method.     

Metathesis polymerisation of phenylacetylene catalysed by (arene)Mo(CO)3 activated by electron acceptor chloranil

Phenylacetylene (PA) was polymerised by employing (arene)Mo(CO)₃/chloranil mixture as the catalyst. Preliminary kinetic studies of the polymerisation showed the presence of an induction period before commencement of polymerisation, attributable to the activation of the (arene)Mo(CO)₃ by chloranil through charge-transfer. It was shown that better control over polymer molecular weight and polydispersity was achieved with prior mixing of the metal carbonyl complex with the acceptor and by delaying the addition of the monomer. Polymerisation by metathesis route was ascertained by copolymerisation, sequential addition of monomers and also by end-capping reactions.     

The reaction of salts ofN-(β-hydroxyalkyl)-N′-hydroxydiazeneN-oxides with dihalomethanes

Methylene-bis[N′-oxydiazene-N-(β-hydroxyalkyl)N-oxides] were synthesized by the reaction of salts ofN-(β-hydroxyalkyl)-N′-hydroxydiazeneN-oxides with diahalomethanes. The effect of the nature of the starting reagents and the reaction condtions on the yields of the target compounds was studied. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2266–2269, November, 1998.     

Reactions of 3-nitro-1,2,4-triazoles with alkylating agents. 3. Alkylation of a neutral heterocycle by diethyl sulfate

The reaction of 3-nitro-5-R-1,2,4-triazoles with diethyl sulfate gives 1-ethyl-3-R-5-nitro-, 4-ethyl-3-nitro-5-R-1,2,4-triazoles, 1,4-diethyl-, 1,4-diethyl-3-methyl-1,2,4-triazol-5-ones, and 1,4-diethyl-3-nitro-5-R-1,2,4-triazolium salts. When compared with the use of dimethyl sulfate as alkylating agent the ethylation products have a markedly increased fraction of triazolones (up to 30–37%) and a somewhat lowered yield of nitrotriazolium salts (up to 6–10%). The reaction time is increased by an order. __________ Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 9, pp. 1378–1381, September, 2006.     

Dinitramide and its salts

Dinitramide readily adds to acrolein, methyl vinyl ketone, and phenyl vinyl ketone, but not to acrylonitrile or methyl acrylate. Treatment of dinitro compounds (O₂N)₂NCH₂CH₂COR (R = H, Me, Ph, OMe) with bases results in dinitramide salts in 66–83 % yields.For part 1, see Ref. 1.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1264–1266, July, 1994.