Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Yu. I. Gevaza"'
Publikováno v:
ChemInform. 23
Publikováno v:
ChemInform. 36
Reaction of substituted 2-allylthiopyrimidin-4(3H)-ones with p-nitrobenzosulfenyl chloride gives the products of addition at the allyl moiety, while the reaction with 2-benzothiazolyl sulfenyl chloride yields thiazolidinopyrimidines with an angular s
Publikováno v:
ChemInform. 36
Bromination and iodation of 2-(alkenylthio)pyrimidin-6-ones occur selectively and lead to formation of the corresponding 7-oxo-2,3-dihydrothiazolopyrimidinium or 8-oxo-3,4-dihydro-2H-pyrimidothiazinium salts. The selectivity of the reaction is contro
Publikováno v:
Chemistry of Heterocyclic Compounds. 12:1111-1114
It is shown that in the iodination of N,N-dialkylamino-2-methyl-4-penten-2-ol and N,N-diethylamino-3-butene oxides the N-oxide group participates in the intramolecular cyclization of these compounds. N,N-Dialkyl-4-methyl-4-hydroxy-6-iodomethyltetrahy
Autor:
Yu. I. Gevaza, V. I. Staninets
Publikováno v:
Chemistry of Heterocyclic Compounds. 18:1115-1132
The literature data on reactions involving electrophilic heterocyclization of δ, ɛ-unsaturated alcohols, 2-allylphenols, oxiranes, aldehydes, and ketones are correlated. The factors that affects the reactivities of the unsaturated compounds (the st
Autor:
Yu. I. Gevaza, V. I. Staninets
Publikováno v:
Chemistry of Heterocyclic Compounds. 20:701-713
The results of research with the participation of unconjugated dienes in intra-molecular electrophilic heterocyclization are presented. It is shown that this reaction can be used for the synthesis of heterocycles with one, two, or more heteroatoms. T
Autor:
V. I. Staninets, Yu. I. Gevaza
Publikováno v:
Chemistry of Heterocyclic Compounds. 21:359-371
The literature data on the electrophilic heterocyclization reactions of unsaturated amines, enamines, amidines, amides, and urethanes are correlated. The factors that affect the reactivities of unsaturated amino compounds in electrophilic intramolecu
Autor:
V. I. Staninets, Yu. I. Gevaza
Publikováno v:
Chemistry of Heterocyclic Compounds. 24:1073-1088
Data on the electrophilic-heterocyclization reactions of γ, δ- and δ, e-unsaturated carboxylic acids are correlated. The use of this reaction for the synthesis of substituted mono-, bi-, tri-, and polycyclic γ- and δ-lactones is demonstrated. Da
Autor:
Yu. I. Gevaza, V. I. Staninets
Publikováno v:
Chemistry of Heterocyclic Compounds. 22:231-242
The literature on the electrophilic heterocyclization of unsaturated sulfur and phosphorus compounds has been reviewed. The factors influencing the reactivity of unsaturated compounds in such reactions are discussed, and data on the stereo-chemistry
Publikováno v:
Chemistry of Heterocyclic Compounds. 24:1328-1330
Derivatives of cyclopenta[b]tetrahydrofurans are formed as a result of the iodocyclization of cis-1-R-2-allylcyclopentan-1-ols. The iodocyclization reaction of unsaturated alcohols is described by a kinetic equation of the second order (the first ord