Zobrazeno 1 - 8
of 8
pro vyhledávání: '"M. Yu. D'yakov"'
Publikováno v:
Chemistry of Heterocyclic Compounds. 30:696-700
Piperidine-4-spiro-5′-irnidazolidine-2′, 4′-diones have been synthesized from the appropriate methyl substituted 2 phenyl-4-hydroxypiperidines and 4-cyano-4-aminopiperidines by the Bucherer—Bergs and Strecker methods. The stereocheinical comp
Publikováno v:
Chemistry of Heterocyclic Compounds. 30:556-561
The major transformations in the mass spectral decomposition of 4-substituted 2-phenylpiperidines follow a similar pattern and primarily involve cleavage of the piperidine ring and loss of alkene molecules containing functional groups.
Autor:
A. I. Kuznetsov, B. V. Unkovskii, L. A. Shundrin, T. D. Sokolova, M. Yu. D'yakov, A. S. Moskovkin, T. M. Serova, I. A. Vladimirova
Publikováno v:
ChemInform. 24
Publikováno v:
Chemistry of Heterocyclic Compounds. 28:1389-1394
The action of ammonia, methylamine, or dimethylamine on substituted 4-hydroxy-4-cyanopiperidines in a modified Strecker synthesis gave mixtures of stereoisomers of the corresponding 4-amino-, 4-methylamino- and 4-dimethylamino-4-cyanopiperidine. 1H a
Autor:
A. I. Kuznetsov, L. A. Shundrin, I. A. Vladimirova, T. M. Serova, M. Yu. D'yakov, A. S. Moskovkin, T. D. Sokolova, B. V. Unkovskii
Publikováno v:
Chemistry of Heterocyclic Compounds. 28:546-550
Publikováno v:
Chemistry of Heterocyclic Compounds. 27:183-186
The difficultly obtainable substituted 2-phenyl-4-piperidinones were synthesized by the reaction of styryl Β-dimethylaminoethyl ketone hydrochlorides with aqueous solutions of ammonia or alkylamines. It was found using 1H and 13C NMR spectroscopy me
Publikováno v:
Chemistry of Heterocyclic Compounds. 26:1132-1136
Mixtures of stereoisomers of the corresponding 4-hydroxy-4-cyanopiperidines were synthesized by the reaction of substituted 4-piperidones with hydrogen cyanide by an exchange reaction with acetone cyanohydrin. The ratios of the stereoisomers in the r
Publikováno v:
Chemistry of Heterocyclic Compounds. 28:1395-1397
1,2,5-Trimethyl-4-piperidone was used as the starting reagent in the synthesis of stereoisomeric 1,2,5-trimethylpiperidine-4-spiro-5′-imidazolidine-2′,4′-dione and its sulfur analog. The structures of these products were elucidated using 1H and