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Papers quoted in Current Contents on project 1-07-106


Quoted papers: 9
Other papers: 57
Total: 66


Title: Pyrrolotropones. Synthesis and Properties of New Substituted 6H-Cyclohepta(c)pyrrol-6-one

Authors:
Šuprina, Mihela (48536)
Vorkapić-Furač, Jasna (53001)
Journal: Zeitschrift fur Chemie
ISSN: 0044-2402
Volume: 30
Year: 1990
Pages: from 437 to 438
Number of references: 5
Language: njemački
Summary: The series of new polysubstituted pyrrolotropones was prepared inthe yields of 32-90% for study of their chemical andpharmacological properties. The synthesis of these compounds wereachieved by the condensation of 3,4-pyrrolecarbaldehydes with CHacidic carbonyl compounds in the presence of pyperidine or amixture pyperidine/acetic acid as catalysts.
Keywords: 3,4-pyrrolecarbaldehydes, pyrrolotropones

Title: Ferrocene Compounds. XVIII. Synthesis of Some 1,1'-Bis(ureidomethyl)ferrocene Derivatives.

Authors:
Kovač, Spomenka (76076)
Rapić, Vladimir (40311)
Journal: Croatica Chemica Acta
ISSN: 0011-1643
Volume: 64
Year: 1991
Pages: from 593 to 597
Number of references: 8
Language: engleski
Summary: Several 1,1'-ferrocenylenebiscarbinols (2) were prepared byreduction of the corresponding 1,1'-diacylferrocene (1; R=CH3,C6H5, p-ClC6H4, and m-CH3C6H4) with sodium borohydride.Condensations of the carbinols prepared with methyl isocyanate inboiling toluene gavealpha,alpha'-(1,1'-ferrocenylene)bis(N-ethyl-N,N'-dimethylurea)(4a) andalpha,alpha'-(1,1'-ferrocenylene)bis(N-arylmethyl-N,N'-dimethylureas) (4b-4d).
Keywords: 1,1'-ferrocenylenebiscarbinols, 1,1'-diacylferrocenes, 1,1'-bis(ureidomethyl)ferrocenes

Title: Synthesis of Some Schiff Bases of 3-Aroyl-6-aryl-4-hydroxy-2H-pyran-2-ones

Authors:
Sušnik, Ivana (45581)
Vorkapić-Furač, Jasna (53001)
Duraković, Senadin (10973)
Koprivanac, Stanko
Lasinger, Jasna
Journal: Monatshefte fur Chemie
ISSN: 0026-9247
Volume: 123
Year: 1992
Pages: from 817 to 822
Number of references: 12
Language: engleski
Summary: The reaction of 3-aroyl-6-aryl-4-hydroxy-2H-pyran-2-ones (Ar=p-tolyl, 1,1'-biphenyl-4-yl or thienyl) with aniline andsubstituted o-phenylenediamine (R= H, CH3 or Cl) yields a seriesof new Schiff bases 2a-f in 51-72% yield. Bromination of 1a gave5-bromo derivative 1c, while compounds 1a, 1b, 2b, 2e and 2f wereconverted to 2,6-diaryl-4H-pyran-4-ones 3a-c. All products havebeen fully characterized.
Keywords: Aniline, 3-aroyl-6-aryl-4-hydroxy-2H-pyran-2-ones, Schiff bases, substituted o-phenylenediamines

Title: Structure of Bis(ferrocenyl(p-tolyl)methyl) Ether

Authors:
Matković-Čalogović, Dubravka (108862)
Rapić, Vladimir (40311)
Kovač, Spomenka (76076)
Journal: Acta Crystallographica
ISSN: 0108-2701
Volume: 49
Year: 1993
Pages: from 226 to 228
Number of references: 14
Language: engleski
Summary: The molecule lies on a crystallographic twofold axis which passesthrough the O atom. The cyclopentadienyl rings are twisted 7,6(1)from the eclipsed conformation. In the ferrocene moiety, the Fe-Cdistances are in the range 2,030(5)-2,074(4) A and C-C distancesin the range 1,402(6)-1,428(4) A. The substitution of onecyclopentadienyl ring causes some distortion within the ferrocenemoiety.
Keywords: Bis(ferrocenyl(p-tolyl)methyl) Ether,Fc-C distances, C-C distances

Title: Chemical and Electrochemical Synthesis of Some Substituted N,N'-Diacyl-p-phenylenediamines

Authors:
Šuprina, Mihela (48536)
Vorkapić-Furač, Jasna (53001)
Journal: Archiv der Pharmazie
ISSN: 0365-6233
Volume: 326
Year: 1993
Pages: from 447 to 449
Number of references: 5
Language: engleski
Summary: Some N,N'-diacyl-p-phenylenediamines substituted with halogene(2a-c) were prepared. Their polarographic reduction inN,N-dimethylformamide with Et4NClO4 was perforemed and discussed.The mechanism of the electrochemical reduction is stated.Large-scale electrolytic reductions of 2a-b to 3a-b wereperformed.
Keywords: (electro)chemical synthesis, N,N'-diacyl-p-phenylenediamines (polarographic reduction of)

Title: Ferrocene compounds. XX. Synthesis and Reactions of Some Ferrocene Fulvenes

Authors:
Kovač, Spomenka (76076)
Rapić, Vladimir (40311)
Filipović-Marinić, Nevenka (11803)
Journal: Journal of Organometallic Chemistry
ISSN: 0022-328x
Volume: 48
Year: 1993
Pages: from 181 to 187
Number of references: 13
Language: engleski
Summary: Reaction of several aroylferrocenes (1) with cyclopentadienide(from cyclopentadiene and sodium in ethanol) has given6-aryl-6-ferrocenylfulvenes (2) in 53-69% yields.Similarly,starting from 1,1'-diaroylferrocenes (5), thecorresponding bisfulvenes 6 has been obtained in ca 70% yield.Upon standing, in solution or as solids the fulvenes 2 or 6 giveequilibrated mixtures with the corresponding dimers 3 and 7 andoligomers 8. Addition of acrylonitrile to the ferrocene fulvenesgave the endo-isomers 4 in 49-57% yields and mixtures of endo-and exo-bisadducts 10 in 56-75% yields.
Keywords: 6-aryl-6-ferrocenylfulvenes, bisfulvenes (adducts of)

Title: Ferrocene Compounds. XXI. Synthesis of Some beta-Aryl-beta-ferrocenylpropionic Acids and beta, beta-(1,1'-Ferrocenylene)bis(beta-arylpropionic Acids)

Authors:
Lisac, Srđan
Rapić, Vladimir (40311)
Kovač, Spomenka (76076)
Journal: Croatica Chemica Acta
ISSN: 0011-1643
Volume: 67
Year: 1994
Pages: from 531 to 541
Number of references: 14
Language: engleski
Summary: Reaction of several alpha-substituted ferrocenylmethanols 1 with diethyl malonate gave condensation products 3, which were hydrolized and decarboxylated to beta-ferrocenylbutyric acid (6a) and beta-aryl-beta-ferrocenylpropionic acids (6b-6e). Similarly, starting from alpha,alpha'-disubstituted 1,1'-ferrocenylenebismethanols 2 beta,beta-(1,1'-ferrocenylene)bis(butyric acid) (11a) and beta,beta-(1,1'-ferrocenylene)bis(beta-arylpropionic acids (11b-11e) have been obtained via 8 and 9. The mechanism of these condensation reactions which includes transesterification of diethyl malonate with carbinols 1 and 2 has been proposed.
Keywords: ferrocenymethanol, beta-aryl-beta-ferrocenylpropionic acids, beta,beta-(1,1'-ferrocenylene)bis(beta-arylpropionic acids)

Title: Synthesis, Separation of Enantiomeres and Barrier to Racemization of Some Sterically Hindered N-Aryl-1,2,3,4-tetrahydro-3,3-dimethyl-2,4-quinolidines and Their Thio Analagues

Authors:
Šarac-Arneri, Ruža (45996)
Mintas, Mladen
Pustet, N.
Mannschreck, A.
Journal: Monatshefte fur Chemie
ISSN: 0026-9247
Volume: 125
Year: 1994
Pages: from 457 to 468
Number of references: 19
Language: engleski
Summary: The novel N-aryl-1,2,3,4-tetrahydro-3,3-dimethyl-2,4-quinolinediones 1, 4 and 8 were thieted with Lawesson reagent and P4S10 to yield the monothio derivates 2 and 5 and the dithio compounds 3,6 and 9. Their enantiomeres were separated by liquid chromatography or triacetyl- or tribenzoylcellulose. Rotation barries for 1-4 and 8 were determined by thermal racemization and discussed in terms of steric effects.

Title: Ferrocene compounds. XXII. Synthesis and Reaction of Some Ferrocenylthiaaliphatic Acids

Authors:
Lisac, Srđan
Rapić, Vladimir (40311)
Journal: Journal of Organometallic Chemistry
ISSN: 0022-328x
Year: 1995
Pages: from 000
Number of references: 12
Language: engleski
Summary: Condensation of several ferrocenylcarbinols (1) with thioglycolic acid, beta-bercaptopropionic acid or beta-mercaptoisobutyric acid in the presence of trifluoracetic acid have given the corresponding ferrocenylthiaaliphatic acids (2-4) with the 65-99%yields. Instead of the expected intramoleculary cyclized products, ractions of the acids 2-4 with trifluoroacetic anhydride give 23-30% of the 1,2-disubstituted 1,2-diferrocenylethanes (8), 15-26% of trimeric species (9), and about 30% of oligomeric species (10). The mechanism of the reactions is discussed.
Keywords: Iron, Ferrocene


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