Results 251 to 260 of about 699,669 (281)

ChemInform Abstract: STEREOSPEZIFISCHE SYNTH. VON CIS‐1‐ALKOXYDIENEN

Chemischer Informationsdienst. Organische Chemie, 1970
Abstract1,4‐Dichlorbutin (I) reagiert mit Alkoholen (II) in Gegenwart von Kaliumhydroxid zu 1‐Alkoxybuten‐(l) inen‐(3) (III), die sich am Lindlar‐Katalysator selektiv zu cis‐1‐Alkoxybutadienen (IV) hydrieren lassen.
S. M. MAKIN, S. D. JABLONOVSKAJA
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ChemInform Abstract: (1R,2S)‐(+)‐cis‐1‐Methoxycarbonyl‐2‐methylcyclobutane.

ChemInform, 2001
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Jacob S. Alexander, John E. Baldwin, Richard C. Burrell, Karin Ruhlandt‐Senge   +3 more
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Synthesis of cis-1-methyl-2-aryl-3-aroylaziridines

Chemistry of Heterocyclic Compounds, 1980
trans-1-Methyl-2-aryl-3-aroylaziridines readily undergo epimerization to give the corresponding cis isomers in high yields in the presence of catalytic amounts of quaternary ammonium bases (trimethylbenzylammonium or triethylmethylammonium hydroxide). The structures of the compounds obtained were established on the basis of the IR and PMR spectra and ...
I. G. Tishchenko, O. N. Bubel', V. A. Konovalov   +2 more
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Synthesis and Polymerization of cis, cis‐1‐Methylcyclooctadiene‐1,5

Journal of Polymer Science Part C: Polymer Symposia, 1967
Abstractl‐Methyl‐cis, cis‐cyclooctadiene‐1,5 was obtained by mixed butadiene‐isoprene dimerization in the presence of a catalyst prepared by treating nickel acetylacetonate with lithium boron hydride in the presence of triphenyl phosphite. In analogy with cis, cis‐cyclooctadiene‐1,5, methyleyclooctadiene can be polymerized, in the presence of the Al ...
A. Valvassori, G. Sartori, V. Turba, M. P. Lachi   +3 more
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Iodocyclization of cis-1-R-2-allylcyclopentan-1-ols

Chemistry of Heterocyclic Compounds, 1988
Derivatives of cyclopenta[b]tetrahydrofurans are formed as a result of the iodocyclization of cis-1-R-2-allylcyclopentan-1-ols. The iodocyclization reaction of unsaturated alcohols is described by a kinetic equation of the second order (the first order for each of the reagents).
Yu. I. Gevaza, I. P. Kupchik, V. I. Staninets   +2 more
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An improved synthesis of isomerically pure cis-1-bromopropene

The Journal of Organic Chemistry, 1991
We report a substantial improvement in the procedure by carrying out the bromo decarboxylation of 2 in neat Et 3 N or EtN(i-Pr) 2 at 40 o C. Use of either amine provided isomerically pure 3 reproducibly in 57% yield (3≡title compound)
Carl E. Fuller, Donald G. Walker
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Synthesis of cis,cis,cis-1-alkylidene-2,3,4,5-tetrakis(diphenylphosphinomethyl)cyclopentanes

Tetrahedron, 2009
Abstract A new strategy to prepare tetradentate or pentadentate diphenylphosphine ligands has been explored from Diels–Alder adducts of fulvenes and maleic anhydride. A tetradentate phosphine ligand, bearing a side chain allowing the formation of a bond with polystyrene resin, has been prepared in seven steps from cyclopentadiene.
Reynaud, C., Fall, Y., Feuerstein, M., Doucet, H., Santelli, M.   +4 more
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Synthesis of 2- and 3-alkyl(aryl)-cis-1-thiadecalins

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1989
For the first time cis- and trans-2- and 3-alkyl-cis-1-thiadecalins were synthesized and some of their physical constants were examined.
N. P. Volynskii, L. A. Zegel'man, M. B. Smirnov   +2 more
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Adiabatic photochemical isomerization of cis-1-(9-anthryl)-2-phenylethylenes

Journal of Photochemistry, 1987
Abstract The photochemical cis—trans isomerization of 1-(9-anthryl)-2-phenylethylenes (9-styrylanthracenes) has been studied by performing steady state and time-resolved fluorescence measurements. It has been found that singlet excited trans isomers are formed from their photoexcited cis precursors and this is explained in terms of an adiabatic ...
Kjell Sandros, Hans-Dieter Becker
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Sulfinyl and sulfonyl derivatives of aryl substituted cis-1-thiadecalins

Chemistry of Heterocyclic Compounds, 1987
Individual 2α-aryl- and 2α,4α-diaryl-cis-thiadecalin-1Β-oxides and 1,1-dioxides have been synthesized. The effect of sulfinyl and sulfonyl groups has been observed on the chemical shifts of carbon atoms in these conformationally homogeneous, stereochemically similar systems.
S. K. Klimenko, N. N. Sorokin, T. I. Tyrina, T. V. Stolbova   +3 more
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