Results 221 to 230 of about 734,495 (266)

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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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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Investigation of structural transitions in CIS-1-4-polyisoprene

Polymer Science U.S.S.R., 1987
Application of differential scanning calorimetry to cis-1,4-polyisoprene reveals structural transitions, the temperatures of which are the same as the temperature transitions observed previously by IR spectroscopy and by a diffusion method. Heating of the elastomer at constant temperature provides a means of formulating its matrix structure in each ...
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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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Preparation of some cis-1,trans-5-germacratriene derivatives

Journal of the Chemical Society D: Chemical Communications, 1971
By photoisomerisation, germacrone (I) was transformed into two photoisomers, cis-1,trans-5-germacrone (II) and cis-1,cis-5-germacrone (III): cis-1,trans-5-germacratriene (VI) was derived from (II).
Ken'ichi Takeda, I. Horibe, H. Minato
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The Diels-Alder reaction of dienes with a cis-1-methyl group

Tetrahedron Letters, 1987
Abstract A 1,1,3-trimethyl-2-alkylbutadiene undergoes Diels-Alder reactions far more efficiently than the corresponding 1,1-dimethyl-2-alkylbutadiene.
Roger V. Bonnert, Paul R. Jenkins
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Structural and vibrational study of the Ci(1) conformation of 18-crown-6

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2002
Optimized geometry, vibrational frequencies and IR absorption intensities were calculated for the Ci(1) conformation of 18c6. Optimized geometry was compared with the experimental geometry and that of the Ci(2) conformation of 18c6. The Ci(1) conformation is more planer than the Ci(2) conformation of 18c6, which provides an explanation that free 18c6 ...
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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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Cis‐1‐AIkylcycloheptandiole‐ (1, 2)

Zeitschrift für Chemie, 1968
Rolf Borsdorf, Bernd Olesch
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Acid-catalyzed isomerization of cis-1-phenyl-1,3-butadiene and cis-1-methyl-3-phenylallyl alcohol

Journal of the American Chemical Society, 1971
Yeshayau Pocker, Martin J. Hill
openaire   +1 more source