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Alan R. Katritzky 《Tetrahedron letters》2006,47(9):1465-1467
Aminoalkylation of a series of primary and secondary nitriles with N-(α-aminoalkyl)benzotriazoles 1 (derived from a variety of secondary amines and aldehydes) proceeds smoothly providing the corresponding β-aminoalkyl nitriles 5a-j in 66-97% yields. 相似文献
75.
《Analytical letters》2012,45(6):479-493
Abstract Successful GLC separation of complex mixtures of aldoses and alditols has been achieved. Aldoses are analyzed as the poly-O-acetylaldonic nitriles (Wohl derivatives), and polyols are analyzed as the polyacetyl esters. When mixtures of aldoses and alditols are subjected to the conditions of the Wohl synthesis, each component forms a single derivative. Terminal dissymmetry is retained for aldoses. Analyses are made using 60 m SE-30 open tubular glass capillary columns with temperature programming. 相似文献
76.
Data on methods for the synthesis of monocyclic and polynuclear NH-unsubstituted tetrazoles are reviewed.Dedicated to Prof. H. Elguero on the occasion of his 65th birthday.St. Petersburg State Technological Institute (Technical University), St. Petersburg 198013, Russia; Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 867–884, July, 2000. 相似文献
77.
Roberto Ballini Dennis FioriniMaria Victoria Gil Alessandro Palmieri 《Tetrahedron letters》2003,44(50):9033-9034
The reaction of nitroalkanes with 2-chloro-3-phenylsulfonylpropanenitrile, in the presence of three equivalents of DBU at −10°C, allows the synthesis of polyfunctionalized α,β-unsaturated nitriles. The method proceeds through three different reactions carried out in a tandem sequence, allowing the one-pot formation of the α,β-unsaturated nitriles, generally, with complete E stereochemistry. 相似文献
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79.
Ausheva O. G. Glushkov V. A. Shurov S. N. Shklyaev Yu. V. 《Russian Chemical Bulletin》2001,50(9):1648-1656
The reactions of 1-(p-methoxyphenyl)-2-methylpropan-1-ol or -cyclohexyl-p-methoxybenzyl alcohol with nitriles RCN in concentrated sulfuric acid afforded 1-R-3,3-dialkyl-2-azaspiro[4.5]deca-1,6,9-trien-8-ones. The stability of the latter toward the dienone-phenolic rearrangement depends on the nature of the substituent R. The reaction mechanism was studied by the semiempirical quantum-chemical AM1 method. 相似文献
80.
Yifan Shen Yu Zhou Lili Jiang Guangni Ding Luo Luo Zhaoguo Zhang Xiaomin Xie 《Tetrahedron》2018,74(31):4266-4271
A convenient and efficient copper-catalyzed aerobic oxidation of primary amines to aryl nitriles was described. Various benzylic and allylic amines were selectively oxidized to the corresponding nitriles in high yields using CuBr2/NMI as the catalyst and O2 as the oxidant. The oxidation reaction profiles monitored by 1H NMR disclosed the scenario of the reaction path as well as the role of the additives. The addition of NMI increased the rate of reaction and suppressed the hydrolysis and the deamination. 相似文献