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81.
Kulikov A. S. Ovchinnikov I. V. Molotov S. I. Makhova N. N. 《Russian Chemical Bulletin》2003,52(8):1822-1828
A convenient preparative method was developed for the synthesis of 4-amino-3-furoxancarboxylic acid azide, which is a universal synthon for the preparation of functional furoxan derivatives. This method was used for preparing new azo-, azoxy-, azido-, cyano-, nitro-, carbonylamino-, and hydroxylamino-substituted furoxan derivatives, which have earlier been difficultly accessible. 相似文献
82.
Tikhonova I. A. Dolgushin F. M. Tugashov K. I. Furin G. G. Petrovskii P. V. Shur V. B. 《Russian Chemical Bulletin》2001,50(9):1673-1678
Cyclic trimeric perfluoro-o-phenylenemercury (o-C6F4Hg)3 readily reacts with N,N-dimethylacetamide and n-butyronitrile to form the complexes {[(o-C6F4Hg)3](MeCONMe2)2} and {[(o-C6F4Hg)3](PrnCN)}, respectively. According to X-ray diffraction data, the amide ligands are located above and below the plane of the macrocycle, each being coordinated to all Hg atoms of the macrocycle through the O atom. The nitrile ligand is bound to the macrocycle through the N atom, all Hg atoms being also involved in this bonding. 相似文献
83.
V. N. Yarovenko M. M. Krayushkin O. V. Lysenko L. M. Kustov I. V. Zavarzin 《Russian Chemical Bulletin》1994,43(3):402-404
A new synthetic method for the preparation of15N-labeled nitriles from nonlabeled nitriles is proposed.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 444–446, March, 1994. 相似文献
84.
An efficient procedure was developed for the synthesis of previously unknown 3-aryl(styryl)-2-(4-arylthiazol-2-yl)oxirane-2-carboxamides
and 2-(4-arylthiazol-2-yl)-1-oxaspiro[2.5]octane-2-carboxamides based on treatment of (E)-3-aryl-2-(4-arylthiazol-2-yl)acrylonitriles and cyclohexylidene(4-arylthiazol-2-yl)acetonitriles with an H2O2—KOH system in EtOH. Oxidation of (E)-3-(4-chlorophenyl)-2-(4-phenylthiazol-2-yl)acrylonitrile with an H2O2—AcOH system affords 3-(4-chlorophenyl)-2-(4-phenylthiazol-2-yl)oxirane-2-carbonitrile in 55% yield.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 2319–2322, October, 2005. 相似文献
85.
T. A. Vaganova P. S. Yuferov L. I. Goryunov E. V. Panteleeva G. E. Sal’nikov L. N. Shchegoleva V. I. Mamatyuk V. D. Shteingarts 《Russian Chemical Bulletin》2006,55(6):976-980
Stable cyanomethylcyclohexadienyl anions generated in two-electron reduction of isomeric tolunitriles by potassium in liquid
ammonia were detected by NMR spectroscopy. The chemical shifts in these anions were obtained from density functional (PBE/3z)
quantum chemical calculations and the electron density distributions for the anions were calculated in the framework of the
NBO approach at the HF/6-31+G* level of theory. The experimental and calculated δC values are in good agreement. Changes in the δC values on going from the starting nitriles to the corresponding anions are linearly related to the calculated π-electron
densities on the pentadienyl ring carbon atoms.
Dedicated to the memory of Academician V. A. Koptyug on the occasion of the 75th anniversary of his birth.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 940–944, June, 2006. 相似文献
86.
Stephen Caddick Duncan B JuddAlexandra K.de K Lewis Melanie T ReichMeredith R.V Williams 《Tetrahedron》2003,59(29):5417-5423
The scope of nickel boride mediated reduction of nitriles has been extended further to allow the preparation of Boc protected amines via a mild catalytic process. It is noteworthy that the toxicity of this procedure is greatly reduced due to its catalytic nature in nickel(II) chloride used in combination with excess sodium borohydride. The protocol is marked by its resilience towards air and moisture and hence an easy and general practical protocol. 相似文献
87.
88.
89.
Hossein Eshghi Zinat Gordi 《Phosphorus, sulfur, and silicon and the related elements》2013,188(2):619-623
Abstract A rapid and efficient procedure is developed for a one-pot synthesis of nitriles by condensation of aldehydes with hydroxylamine hydrochloride in the presence of P2O5/SiO2 in solvent-free media under microwave irradiation. 相似文献
90.
Thomas Van Der Does Friedrich Bickelhaupt 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1-4):281-284
Abstract The influence of substituents at the carbon of the P=C bond of about 60 phosphaalkenes was investigated by 31P NMR spectroscopy. The P=C system is characterized as electronwithdrawing. All compounds were found to be configurationally stable. 相似文献