Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Andrej A. Tolmachev"'
Autor:
Anatolij S. Merkulov, Andrej A. Tolmachev, Aleksandr A. Yurchenko, Evgenij V. Zarudnitskii, Igor I. Pervak
Publikováno v:
Tetrahedron. 64:10431-10442
The reactivity of 2-aryl-5-trimethylsilyl-1,3,4-oxadiazoles toward different types of electrophiles was investigated. These silanes readily react with chlorine, bromine, aliphatic acyl chlorides, 2-nitrobenzenesulfenyl chloride, and some reactive iso
Autor:
Aleksandr M. Pinchuk, Aleksandr A. Yurchenko, Evgenij V. Zarudnitskii, Anatolij S. Merkulov, Marina Semenova, Andrej A. Tolmachev
Publikováno v:
Heteroatom Chemistry. 16:648-655
The reaction of phosphorus(III) halides with 6-substituted imidazo[2,1-b]thiazoles in the presence of bases proceeds regioselectively and affords 5-phosphinoimidazo[2,1-b]thiazoles, useful synthons for the preparation of various P(III) and P(V) deriv
Reaction of ?-carbonyl substituted 1,3,3-trimethyl-2-methyleneindolines with phosphorus(III) halides
Publikováno v:
Heteroatom Chemistry. 14:23-28
The phosphorylation of N-benzoyl-2-(1,3,3-trimethyl-2-methyleneindoline)acetamide (2) and ω-(3-dimethylamino)benzoyl-1,3,3-trimethyl-2-methyleneindoline (6) with phosphorus(III) halides resulted in the formation of 2,3-dihydro-4H-1,5,2-oxazaphosphin
Autor:
Andrej A. Tolmachev, A. I. Konovets, Peter G. Jones, Reinhard Schmutzler, A. N. Kostyuk, Alexandr M. Pinchuk, A. Fischer
Publikováno v:
Heteroatom Chemistry. 14:452-458
Chlorination of the 4-[chloro(diisopropylamino)phosphino]pyrazole 1 leads to the dichlorophosphonium chloride 2, which immediately after its formation transforms into the dichloro(diisopropylamino)phosphonio[5(4)oxopyrazol-4-ylide-5-one] 3, as a resu
Autor:
Alexandr M. Pinchuk, A. A. Yurchenko, Andrej A. Tolmachev, Vladimir V. Ivanov, Alexander N. Chernega
Publikováno v:
Heteroatom Chemistry. 13:84-92
A number of 4,5-dihydrobenzo[e]imidazo[2,1-c][1,4,2]diazaphosphinine derivatives were prepared by the direct phosphorylation of 1-(4-Chlorophenylcarboxamido)-2-(1H-1-imidazolyl)-5-trifluoromethylbenzene in basic medium with phosphorus(III) bromide an
Autor:
Alexandr M. Pinchuk, Vladimir V. Ivanov, Andrej A. Tolmachev, Evgenij V. Zarudnitskii, A. A. Yurchenko
Publikováno v:
Heteroatom Chemistry. 13:146-152
Phosphorylation of 4- and 1-substituted 1,2,4-triazoles with PCl3, PhPCl2, Ph2PCl, and (Et2N)2 PCl was carried out. A novel phosphorus-containing condensed heterocyclic system (18, 23) was constructed by the reactions of 2-(1H-1,2,4-triazol-1-yl)-1-(
Publikováno v:
Chemistry of Heterocyclic Compounds. 38:349-353
New condensed heterocyclic system with a bridgehead phosphorus atom has been synthesized by the reaction of imidazolyl anilides of 3,4-dimethoxy- and 3-dimethylaminobenzoic acids with phosphorus(III) halides. The reaction begins with the formation of
Autor:
A. P. Marchenko, Georgyi Koidan, Alexandr M. Pinchuk, Andrej A. Tolmachev, A. A. Chaikovskaya, R. V. Smalii
Publikováno v:
Russian Journal of General Chemistry. 72:1688-1694
Amidophosphonium isothiocyanates thiocarbamoylate a series of electron-rich heterocycles and enamines at the nucleophilic carbon atom to form phosphazothiocarbonyl compounds. From the most active heterocycles, bis(phosphazothiocarbonyl) derivatives c
Autor:
Sergey P. Ivonin, Andrej A. Tolmachev, V. V. Pirozhenko, A. A. Chaikovskaya, O. Pushechnikov, Tamara N. Kudrya
Publikováno v:
Chemistry of Heterocyclic Compounds. 35:1313-1318
1-Aryl-2,5-dimethylpyrroles react with acyclic ketones with acid catalysis to give geminal di-2-pyrrolyl derivatives independently of the ratio of the reagents. The reaction of cyclohexanone and cycloheptanone occurs analogously with 2∶1 ratio of p
Publikováno v:
Russian Chemical Bulletin. 48:1341-1347
C-Phosphorylation of 2-thiazolylformamidines by phosphorus tribromide was studied. It was shown that the 1,3-diazabut-1-enyl (formamidine) substituent can be used as both an activating and protective group. 5-Phosphorylated thiazoles containing eithe