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Phthalimide Reaction with 2-Methylquinoline as a Procedure for Synthesis of meso-Heteryl-substituted Tetrabenzoporphins
Pleiades Publishing Ltd - Tập 40 Số 2 - Trang 0 - 2004
N. Е. Galanin, Н. А. Колесников, E. V. Kudrik, G. P. Shaposhnikov
Behavior of benzoins and hydroxy ketones in acid medium: II. Reactions of 1,2-bis(2,5-dimethyl-3-thienyl)-2-hydroxy-ethan-1-one with N,S-binucleophiles in trifluoroacetic acid
Pleiades Publishing Ltd - Tập 42 - Trang 860-864 - 2006
M. M. Krayushkin, B. V. Lichitskii, A. P. Mikhalev, B. V. Nabatov, A. A. Dudinov, S. N. Ivanov
1,2-Bis(2,5-dimethyl-3-thienyl)-2-hydroxyethan-1-one reacts with thioamides, thiosemicarbazides, and methyl hydrazinecarbodithioate in trifluoroacetic acid to give the corresponding thiazole, thiadiazine, and pyrazole derivatives, respectively.
Stereo- and regioselective reaction of selenium dichloride and dibromide with ethynyl(trimethyl)silane
Pleiades Publishing Ltd - - 2012
М. В. Мусалов, А. В. Мартынов, С. В. Амосова, В. А. Потапов
Urotropin synthesis of 3,5-di-tert-butylsalicylic acid derivatives
Pleiades Publishing Ltd - Tập 43 - Trang 1488-1491 - 2007
V. B. Vol’eva, I. S. Belostotskaya, N. L. Komissarova, L. N. Kurkovskaya, A. P. Pleshakova, T. I. Prokofeva
The stability of 3,5-di-tert-butylsalicylic aldehyde against oxidation is due to autoinhibiting of the chain process. However its oxidation into 3,5-di-tert-butylsalicylic acid was performed at the use of acetyl protection of the hydroxy group. In reaction of 6-bromo-2,4-di-tert-butylphenol with urotropin the formation was discovered of 3,5-di-tert-butylsalicylic acid, its nitrile and amide.
Synthesis of 5-Trimethylsilylethynyl-1,3,4-oxadiazoles
Pleiades Publishing Ltd - Tập 39 - Trang 1522-1524 - 2003
M. M. Demina, G. I. Sarapulova, A. I. Borisova, L. I. Larina, A. S. Medvedeva
5-Trimethylsilylethynyl-2-R-1,3,4-oxadiazoles were synthesized for the first time by intramolecular cyclocondensation of unsymmetrical N-acyl-N'-(3-trimethylsilyl-2-propynoyl)hydrazines by the action of phosphoryl chloride.
A convenient synthesis of 3,4-diaryl(hetaryl)-substituted maleimides and maleic anhydrides
Pleiades Publishing Ltd - Tập 42 - Trang 1490-1497 - 2006
S. V. Shorunov, M. M. Krayushkin, F. M. Stoyanovich, M. Irie
A convenient procedure has been developed for the synthesis of 3,4-diaryl(or hetaryl)maleimides by cross coupling of N-substituted 3,4-dibromomaleimides with aryl(hetaryl)boronic acids in the presence of Pd(Ph3P)4 and CsF. The reaction ensures high yields of the products and requires relatively small amount of the catalyst; it can be performed on an enlarged scale. The resulting maleimides are rea...... hiện toàn bộ
Functionalization of the Allyl Fragment in (+)-δ-Cadinol
Pleiades Publishing Ltd - Tập 40 - Trang 337-345 - 2004
F. A. Valeev, I. P. Tsypysheva, A. M. Kunakova, O. Yu. Krasnoslobodtseva, O. V. Shitikova, L. V. Spirikhin, G. A. Tolstikov
Epoxidation, bromination, and iodination of the double bond in (+)-δ-cadinol under various conditions are accompanied by formation of 1,4- or 1,5-epoxy derivatives. By contrast, vicinal hydroxylation gives rise to “normal” products. Intramolecular cyclization of the resulting vicinal diols was studied.
Synthesis, Characterization, and Comparative Study of Some Heterocyclic Compounds Containing Isoniazid and Nicotinic Acid Hydrazide Moieties
Pleiades Publishing Ltd - Tập 56 Số 10 - Trang 1795-1800 - 2020
M. J. Zala, J. J. Vora, Haresh B. Patel
New approach to the synthesis of 1,3-dioxolanes
Pleiades Publishing Ltd - Tập 48 - Trang 638-641 - 2012
V. B. Vol’eva, I. S. Belostotskaya, A. V. Malkova, N. L. Komissarova, L. N. Kurkovskaya, S. V. Usachev, G. G. Makarov
Application of ethanol to the synthesis of 1,3-dioxolanes by the condensation of carbonyl compounds with vicinal diols results in a high yield of the reaction product and considerably reduces the duration of the process. It is assumed that the effect of the ethanol is caused by the adduct formation with carbonyl compounds (hemiacetals) which behave as active intermediates of the condensation. A cy...... hiện toàn bộ
Stepwise Synthesis and Spectral Characteristics of meso-trans-Diphenyldi(1-naphthyl)tetrabenzoporphin and Its Zinc Complex
Pleiades Publishing Ltd - Tập 39 - Trang 1183-1187 - 2003
N. E. Galanin, E. V. Kudrik, G. P. Shaposhnikov
A reaction of phthalimide with phenylacetic acid in the presence of zinc oxide furnished 3-oxoisoindolenyl-3'-oxoisoindolinylidene-1,1'-benzylidine which at heating with 1-naphthylacetic acid in the presence of zinc oxide provided zinc meso-trans-diphenyldi(1-naphthyl)tetrabenzoporphin complex. Proceeding from this compound a meso-trans-diphenyldi(1-naphthyl)tetrabenzoporphin was prepared. The spe...... hiện toàn bộ
Tổng số: 4,985   
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