Trimerization of perfluoroheptanonitrile at high pressures

Conclusions A study was carried out on the trimerization of perfluoroheptanonitrile under high pressure conditions at 110 and 124°C. This reaction obeys zero-order kinetics relative to the monomer and first-order kinetics relative to the catalyst.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1893–1895, August, 1987.     

Synthesis and properties of polyamides from 2,5-furandicarboxylic acid and aromatic and aliphatic diamines

Russian Chemical Bulletin - Polyamides based on the 5-hydroxymethylfurfural derivative (2,5-furandicarboxylic acid dichloroanhydride) and diamines of both aromatic and aliphatic series were...     

Synthesis of S- and S-S-Organosilicon Derivatives of 1,3-Benzothiazole-2-thiol

Russian Journal of Organic Chemistry - The reactions of 1,3-benzothiazole-2-thiol and di(1,3-benzothiazol-2-yl) disulfide with (iodomethyl)silanes containing exocyclic and endocyclic silicon atoms...     

Forty Years to the Artemovsk Scintillation Detector for Neutrinos

The current status of the ASD (Artemovsk scintillation detector) experiment aimed at search for a neutrino flux from gravitational collapses of stellar cores is presented. Experimental data obtained for 40 years of operation of the detector situated in a salt mine at a depth of 570 mwe are processed. The results obtained by calculating the expected signal in the detector on the basis of two models of supernova explosion are described. No candidates for neutrino bursts from gravitational star collapses have been revealed: the limit on the frequency of gravitational collapses was found to be less than one event per 17.15 yr at a 90% confidence level (f_col < 0.058 yr^?1).     

Indole derivatives

Curtius rearrangement of azides of 3-indolylalkanoic acids gave 3-indolyl isocyanates, which were converted to ureas by the action of ammonia and amines. Urethanes were obtained by alcoholysis of 3-indolyl isocyanate, and 1-(3-indolyl)-2-azetidinone was obtained by reaction with diazomethane. Hydrolysis of 3-indolyl isocyanate and hydrogenolysis of its benzylurethane gave 3-aminoindole hydrochloride, which was characterized by synthesis of the monoacetyl derivative.