Zobrazeno 1 - 10
of 105
pro vyhledávání: '"I. Iovel"'
Publikováno v:
Chemistry of Heterocyclic Compounds. 40:701-714
The reaction of triethylsilane with heterocyclic and aromatic azomethines, catalyzed by the [Pd(allyl)Cl]2 complex, was studied. It was found that the reaction is affected by the nature of the functional groups in the aza and methine parts of the ald
Publikováno v:
Chemistry of Heterocyclic Compounds. 40:295-300
The addition of Me3SiCN to N-[3-(2-furyl)-2-propenylidene]trifluoromethylanilines, differing in the position of the CF3 group in the benzene ring and in the presence or absence of a methyl group in the heterocycle, was studied in the presence of alum
Publikováno v:
Chemistry of Heterocyclic Compounds. 39:1443-1453
The reactions of 4-nitrocinnamaldehyde with trifluoromethylanilines in the presence of molecular sieves were studied, and a series of new aromatic and heterocyclic aldimines were synthesized. The molecular and crystal structure of some of them were d
Autor:
Guenther Oehme, Eckhard Paetzold, Ute Schmidt, Ingrid Grassert, I. Iovel, Torsten Dwars, Hans Fuhrmann
Publikováno v:
Kinetics and Catalysis. 44:766-777
Micelle-forming amphiphiles can promote catalyzed reactions in aqueous media. An example is the asymmetric hydrogenation of amino acid precursors. In comparison to the most common solvent methanol, the hydrogenation in water leads to a decrease of ac
Publikováno v:
Chemistry of Heterocyclic Compounds. 39:49-55
The addition of hydrosilanes (HSiEt3, HSiMe2Ph, H2SiPh2) to the CH=N bond of heterocyclic azomethines has been studied in the presence of monovalent complexes of rhodium and palladium. The effect on the reaction of the CF3 group of the aldimines, whi
Publikováno v:
Chemistry of Heterocyclic Compounds. 39:318-327
The reaction of furan, thiophene, pyridine, and also furylacryloyl aldehydes with 2-trifluoromethylanilines has been studied in the presence of molecular sieves and a series of new heterocyclic aldimines has been synthesized. The molecular and crysta
Publikováno v:
Chemistry of Heterocyclic Compounds. 39:449-454
We have synthesized the corresponding aldimines by condensation of 5-tert-butylfurfural and its trimethyl- and triethylsilyl analogs with 2-, 3-, and 4-trifluoromethylanilines in the presence of 4A molecular sieves. We have studied their neurotropic
Publikováno v:
Chemistry of Heterocyclic Compounds. 39:721-725
The addition of trimethylsilyl cyanide to the CH=N bond of furan, thiophene, and pyridine azomethines in the presence of aluminum bromide as catalyst was studied. The effect of the CF3 group in the aldimines produced by the condensation of O-, S-, an
Publikováno v:
Chemistry of Heterocyclic Compounds. 38:46-53
The addition of triethylsilane to O- and S- heterocyclic Schiff bases in the presence of Rh, Pd, Pt, and Ir complexes has been studied. A series of the corresponding amines has been synthesized using the most active catalysts, which were the dimeric,
Publikováno v:
Applied Organometallic Chemistry. 16:133-140
Systematic investigation of asymmetric trimethylsilylcyanation of heterocyclic azomethines has been realized. The addition of trimethylsilyl cyanide to optically active furan, thiophene and pyridine aldimines, derived from (R)- and (S)-1-phenylethyla