Results 121 to 130 of about 652 (178)
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Lignans, γ-lactones and propiophenones of Virola surinamensis
Phytochemistry, 1996Abstract The leaves and seeds of Virola surinamensis contain 17 lignans; fragansins A2 and D2, galbacin, galbelgin, 5-methoxygalbelgin, grandisin, verrucosin, aristolignan, austrobailignan, calopeptin, veraguensin, 5-methoxyveraguensin, nectandrin B, galbulin and galcatin; three propiophenone derivatives; two γ-lactones; juruenolide C and ...
Norberto Peporine Lopès +2 more
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NIS‐Catalyzed Reactions: Amidation of Acetophenones and Oxidative Amination of Propiophenones
Chemistry - A European Journal, 2012Single-step amination: the N-iodosuccinimide (NIS)-catalyzed amidation of acetophenone derivatives by using tert-butylhydroperoxide (TBHP) as an oxidant is presented. A variety of acetyl derivatives of heterocyclic compounds were easily converted to their corresponding ketoamides under these conditions.
Manjunath LaMani +1 more
exaly +3 more sources
The Journal of Chemical Thermodynamics, 2006
Abstract The densities of liquid propiophenone and toluene, and of their mixtures were measured at six temperatures between 283.15 K, and 328.15 K by means of a vibrating-tube densimeter. The excess molar volumes V m E calculated from the density data show that the deviations from ideal behaviour in the systems studied (all being ...
L. Morávková, J. Linek
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Abstract The densities of liquid propiophenone and toluene, and of their mixtures were measured at six temperatures between 283.15 K, and 328.15 K by means of a vibrating-tube densimeter. The excess molar volumes V m E calculated from the density data show that the deviations from ideal behaviour in the systems studied (all being ...
L. Morávková, J. Linek
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2'-(Diphenylphosphino)propiophenone, a Functionalized Tertiary Phosphine
Acta Crystallographica Section C Crystal Structure Communications, 1995The structure of the title compound, Ph 2 P(o-C 6 H 4 -CO-C 2 H 5 ), shows significant distortions from tetrahe dral geometry around the P atom; the C21-P1-C31 angle between the two unsubstituted rings [99.69 (9) o ] is smaller than the other two C-P-C angles [104.37 (9) and 102.24(9) o ]. The P-C distances are 1.828(2), 1.846 (2) and 1.851 (2) A.
B. T. Rasley, M. Rapta, R. J. Kulawiec
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Canadian Journal of Physiology and Pharmacology, 1981
In vitro metabolism of the aromatic ketone propiophenone and its nonaromatic isomer phenylacetone was studied using fortified 12 000 × g supernatants of liver homogenates from rat and rabbit. Reduction to the corresponding alcohols was the major metabolic route observed, although aliphatic C-hydroxylation and alcohol dehydrogenation also occurred ...
R T, Coutts, D B, Prelusky, G R, Jones
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In vitro metabolism of the aromatic ketone propiophenone and its nonaromatic isomer phenylacetone was studied using fortified 12 000 × g supernatants of liver homogenates from rat and rabbit. Reduction to the corresponding alcohols was the major metabolic route observed, although aliphatic C-hydroxylation and alcohol dehydrogenation also occurred ...
R T, Coutts, D B, Prelusky, G R, Jones
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Kinetic Study on Hydrogenation of Propiophenone Catalyzed by Chitosan-Palladium
2010Chitosan-palladium complex (SiO2-CS-Pd) is prepared and used as catalyst to catalyze the hydrogenation of propiophenone. The reaction is taken placed at normal temperature and 1 atm H2. The solvent is alcohol. GC is used to test the reaction course. The reaction is found to be pseudo-zero order with respect topropiophenone.
Hong-Lei Wang +4 more
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Electron transfer processes in the photochemistry of .beta.-(dimethylamino)propiophenone
Journal of the American Chemical Society, 1979The photochemistry of ..beta..-(dimethylamino)propiophenone has been examined in aqueous solvents using laser flash photolysis technique. The triplet state decays via charge-transfer interactions which lead to intramolecular electron transfer and a product which is best described as a biradical zwitterion; the yield of biradical generation is 0.18 in ...
M. V. Encinas, J. C. Scaiano
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ChemInform Abstract: Condensation of Some Propiophenones with Dimethyl Homophthalate.
Chemischer Informationsdienst, 1985AbstractDie Stobbe‐Kondensation der Propiophenone (I) mit dem Homophthalsäureester (II) liefert die Halbester (III) als trennbares E,Z‐Gemisch.
M. F. EL‐NEWAIHY +4 more
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Some novel cyclizations of propiophenones with chlorosulfonic acid
Journal of Heterocyclic Chemistry, 1966AbstractThe reaction of chlorosulfonie acid with propiophenones was found to give the 3‐chloro‐2‐methylbenzothiophene‐1, 1‐dioxides (I) and (VIII); reaction of Mannich bases of aceto‐phenone, with chlorosulfonie acid, gave the corresponding 3‐chloro‐2‐substituted amino‐methylbenzothiophene‐1,1‐dioxides (IX) and (X).
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Reductive dimerization of propiophenone
Pharmaceutical Chemistry Journal, 1989V. A. Zolotareva +3 more
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