Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Yu, SH"'
Publikováno v:
Chemistry of Heterocyclic Compounds. 30:14-19
Alkylation of 2 furanyl- and 2-thienylalkyl ketoximes with alkyl, allyl, and propargyl halides in the two phase catalytic system sol. K2CO3/C6H6/18-crown-6 at room temperature causes the formation of mixtures of E- and Z-isomers of the corresponding
Publikováno v:
ChemInform. 24
Publikováno v:
Chemistry of Heterocyclic Compounds. 27:768-771
The autooxidation of methyl- and dimethyl-substituted N-, S-, and O-heterocyclic compound derivatives has been studied in 1,2-dimethoxyethane—t-BuOK in the presence of 18-crown-6. Mono- and dicarboxylic acid derivatives of pyrazine, pyridine, pyrim
Publikováno v:
Synthetic Communications. 21:557-562
The alkylation of 2 -acetylpyrrole with alkyl iodides in the benzene/solid KOH system in the presence of 18-crown-6 at room temperature gives the corresponding 1-alkyl derivatives in high yields. The phase-transfer catalysed alkylation of 1-alkyl-2-a
Publikováno v:
ChemInform. 21
Publikováno v:
Chemistry of Heterocyclic Compounds. 24:290-294
Reactions of halopyridines with alkali metal phenoxides in a two phase liquid-solid catalytic system, rather than in a liquid-liquid phase transfer catalytic system, make it possible to prepare 2-, 3-, and 4-phenoxypyridines from unactivated bromo- o
Publikováno v:
Applied Organometallic Chemistry. 1:371-378
Sixteen triethylbenzylammonium chlorometallates [Et3 NCH 2Ph][MCIn]m− (M= transition metal, m= 1–3, n= 3–6) and nine anchored ionic metal complexes [℗–CH2PBu3][MCIn]m− derived from ‘polymer-bound tributylmethylphosphonium chloride’ ha
Autor:
M. A. Mikhaleva, M. V. Shimanskaya, K. I. Rubina, G. A. Kolesnichenko, V. A. Savel'ev, L. Ya. Leitis, V. P. Mamaev, Yu. Sh. Gol'dberg
Publikováno v:
Chemistry of Heterocyclic Compounds. 22:310-318
5-Arylpyrimidine-2-carboxylic acids were synthesized by the hydrolysis of 5-aryl-2-cyanopyrimidines and the oxidation of 5-aryl-2-styrylpyrimidines under the conditions of phase-transfer catalysis. The aryl esters of the acids were obtained, and thei
Publikováno v:
Polymer Science U.S.S.R.. 5:438-445
Publikováno v:
Polymer Science U.S.S.R.. 3:1057-1061