Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Dmitry B. Rubinov"'
Publikováno v:
Russian Journal of Organic Chemistry. 54:1232-1240
Regiospecific reduction of carbonyl group of acyl chain in the previously described 4-nitro-3-arylbutanoyl derivatives of dimedone and cyclopentane-1,3-dione was performed. On the basis of nitromethyl group of the enol derivatives of the reduction pr
Publikováno v:
Russian Journal of Organic Chemistry. 54:844-854
Transformation of the nitromethyl group in 3-(2-aryl-3-nitropropyl)-6,6-dimethyl-6,7-dihydro-1,2-benzoxazol-4(5H)-ones by the Nef reaction gave the corresponding aldehydes. Jones oxidation of the latter afforded carboxylic acids together with oxidati
Publikováno v:
Russian Journal of Organic Chemistry. 54:751-762
By reaction of 5,5-dimethyl-2-(3-aryl-4-nitrobutanoyl)cyclohexane-1,3-diones with hydroxylamine and hydrazine hydrate 6,7-dihydrobenzo[d]isoxazol-4(5H)-ones and 6,7-dihydro-1H-indazol-4(5H)-ones were prepared containing a nitromethyl substituent in t
Publikováno v:
Chemistry of Heterocyclic Compounds. 50:1421-1431
We have shown that reaction of nitromethane with cinnamoyl derivatives of five- and six-membered carbo- and heterocylic β-dicarbonyl compounds in the presence of 1,1,3,3-tetramethylguanidine proceeds according to the mechanism of 1,4-conjugate addit
Autor:
Valerii F. Traven, F. S. Pashkovskii, A. M. Borunov, Fedor A. Lakhvich, Yu. S. Dontsu, Dmitry B. Rubinov
Publikováno v:
Russian Journal of Organic Chemistry. 50:1598-1612
1,4-Conjugate Michael addition of nitromethane to the enone fragment of cinnamoyl derivatives of carbo- and heterocyclic β-dicarbonyl compounds provided the corresponding nitromethyl derivatives. The chemoselective reduction of the nitro group in th
Autor:
R. A. Zheldakova, A. V. Baranovski, T. A. Zheldakova, F. A. Lakhvich, Dmitry B. Rubinov, I. L. Rubinova
Publikováno v:
Russian Journal of General Chemistry. 82:122-130
Condensation of 2-propanoyl-, 2-butanoyl-, and 2-pentanoylcyclohexane-1,3-diones with aromatic aldehydes in the presence of secondary amines (diethylamine, pyrrolidine, morpholine, piperidine, and hexamethyleneimine) leads to the formation of the cor
Synthesis of exo- and endocyclic enamino derivatives of 2-(3-arylprop-2-enoyl)cyclohexane-1,3-diones
Publikováno v:
Russian Journal of Organic Chemistry. 47:319-330
Condensation of 2-acetylcyclohexane-1,3-diones with aromatic aldehydes in the presence of piperidine, pyrrolidine, hexamethyleneimine, or morpholine gave the corresponding 2-(3-arylprop-2-enoyl)cyclohexane-1,3-diones as the major products and 2-[3-ar
Publikováno v:
Russian Journal of Organic Chemistry. 47:277-283
Reactions of 2,2-dimethyl-5-(3-oxoalkanoyl)-1,3-dioxane-4,6-diones with alkoxyamines proceed regioselectively at the β′-keto group of the side acyl chain affording the corresponding tricarbonyl imines whose boiling in toluene leads to the formatio
Publikováno v:
Russian Journal of Organic Chemistry. 44:1024-1030
2-(1-Alkoxyiminoalkyl)cyclohexane-1,3-diones undergo at heating Beckmann rearrangement to give 6,7-dihydro-1,3-benzoxazol-4(5H)-one derivatives that under treatment with amines in acid medium are converted into 1,5,6,7-tetrahydro-4H-benzimidazol-4-on
Publikováno v:
Russian Journal of Organic Chemistry. 44:432-439
N-Substituted 6-methyl-1,2,3,4-tetrahydropyridine-2,4-diones reacted with aliphatic carboxylic acid chlorides in the presence of pyridine or triethylamine to give the corresponding 4-O-acyl derivatives which underwent O,C-migration of the acyl group