Results 151 to 160 of about 2,928 (218)

Polymerisation von Trioxan

Angewandte Chemie, 1967
Nach einem Uberblick uber die Polymerisationsmoglichkeiten fur Trioxan wird auf die heutigen Vorstellungen uber den Ablauf der Polymerisation eingegangen. Kennzeichnend fur die unter Ringoffnung verlaufende Polymerisation des Trioxans sind einige Nebenreaktionen der wachsenden Polyoxymethylenkationen, wie Kettenubertragung, Transacetalisierung und ...
K. Weissermel, E. Fischer, K. Gutweiler, H. D. Hermann, H. Cherdron   +4 more
openaire   +1 more source

Domino Self-Sensitized Photooxygenation of Conjugated Dienones for the Synthesis of 1,2,4-Trioxanes.

Journal of Organic Chemistry, 2019
The photochemical behavior of several dienones was studied under aerobic conditions. 2-Allylidene-1,3-cycloalkanediones prepared via Knoevenagel-type condensation between simple readily available 1,3-dicarbonyl substrates and α,β-unsaturated aldehydes ...
Martín J. Riveira, Nadia L. Martiren, Mirta P. Mischne   +2 more
semanticscholar   +1 more source

6-(4′-Aryloxy-phenyl)vinyl-1,2,4-trioxanes: A new series of orally active peroxides effective against multidrug-resistant Plasmodium yoelii in Swiss mice

Bioorganic and Medicinal Chemistry Letters, 2010
Ved Prakash Verma, Ajit Shankar Singh
exaly   +2 more sources

Vibrational Spectra of Trioxane and Trioxane-d6

The Journal of Chemical Physics, 1966
The infrared spectra of trioxane and trioxane-d6 have been measured in the region from 4000 to 300 cm−1 on the gaseous, solution, liquid, and solid samples. Polarized spectra have been taken on the oriented thin layer of crystal grown between NaCl or KBr plates. Group-theoretical analyses were made for a free molecule (point group C3v) and the crystal (
Masamichi Kobayashi, Reikichi Iwamoto, Hiroyuki Tadokoro   +2 more
openaire   +1 more source

Synthesis of 1,2,4-trioxans

Journal of the Chemical Society, Chemical Communications, 1981
The reaction of a mixture of α-hydroxydecyl hydroperoxide [or bis(α-hydroxyalkyl) peroxides] and epoxides in the presence of tungstic anhydride and catalytic amounts ofchlorosulphonic acid gave the corresponding 1,2,4-trioxans in 7–63% yield.
Masahiro Miura, Masatomo Nojima, Shigekazu Kusabayashi   +2 more
openaire   +1 more source

1,2,4-Trioxanes as potential antimalarial agents

Journal of Medicinal Chemistry, 1988
A number of 1,2,4-trioxanes were prepared and tested for antimalarial activity in search of a simplified analogue of the naturally occurring antimalarial qinghaosu. The compounds were assayed in an in vitro system for antimalarial activity against chloroquine-susceptible and chloroquine-resistant strains of Plasmodium falciparum.
J A, Kepler, A, Philip, Y W, Lee, M C, Morey, F I, Carroll   +4 more
openaire   +2 more sources

New Trioxane Copolymers

Journal of Macromolecular Science: Part A - Chemistry, 1972
Abstract A review is given on two types of trioxane copolymers: trioxane/dioxolane copolymers and copolymers of trioxane with polar monomers. It has been possible to find reaction conditions that influence the transacetalization reaction and, hence, the molecular weight distribution and the sequence length of trioxane/dioxolane copolymers.
openaire   +1 more source

The polymerization of crystalline trioxane. III. experiments with irradiated trioxane single crystals

Philosophical Magazine, 1966
Abstract Irradiation with x-rays imparts to trioxane crystals a perennial capacity for later polymerization to high conversion. This capacity remains latent at room temperature, but becomes manifest above a threshold temperature varying with the history of the crystal (40–55°c).
H. B. van der Heijde, P. H. G. van Kasteren   +1 more
openaire   +1 more source

Solubility of trioxane in water

Journal of Chemical & Engineering Data, 1994
The solubility of trioxane in water was determined from 20 to 55 o C.
Stefano Brandani, Vincenzo Brandani, Domenica Flammini   +2 more
openaire   +1 more source

Knowledge of the Proposed Chemical Mechanism of Action and Cytochrome P450 Metabolism of Antimalarial Trioxanes Like Artemisinin Allows Rational Design of New Antimalarial Peroxides

Accounts of Chemical Research, 2004
G. Posner, P. O’Neill
exaly   +2 more sources