Results 171 to 180 of about 3,742 (239)

Aryl glyoxal: a prime synthetic equivalent for multicomponent reactions in the designing of oxygen heterocycles. [PDF]

RSC Adv
Sheikh AR, Arif A, Khan MM.
europepmc   +1 more source

Design, synthesis, and antitumor evaluation of new functionalized spiroindenopyridotriazinepyrans. [PDF]

Sci Rep
Safari F, Bayat M, Hosseini H, Homaee A.
europepmc   +1 more source

Narasin used as a feed additive in conventional rearing of broilers can co-select for vancomycin-resistant Enterococcus faecium through the NarAB ionophore resistance mechanisms. [PDF]

J Antimicrob Chemother
Frederiksen RF, Granstad S, Thøfner I, Slettemeås JS, Lagesen K, Urdahl AM, Simm R.   +6 more
europepmc   +1 more source

Recent Advances in dehydroacetic acid-clubbed pyridine conjugates: design, synthesis, characterization, molecular docking investigations and evaluation of anti-cancer efficacy. [PDF]

Future Med Chem
Kumari G, Rani P, Dhillon S, Chahal M, Rani S, Devi J, Aneja DK, Kinger M.   +7 more
europepmc   +1 more source

Diversity-Oriented Synthesis of Thiophenes Via Switchable Annulation of Ninhydrin-Derived MBH Esters With α-Enolic Dithioesters. [PDF]

Chem Asian J
Zhao S, Li S, Li P, Cheng B, Luo Y, Zhang Y, Zhou K, Wang T, Zhai H, Fu S.   +9 more
europepmc   +1 more source

Cerium(III) Chloride–Catalyzed One-Pot Synthesis of Tetrahydrobenzo[b]pyrans

Synthetic Communications, 2009
Efficient one-pot synthesis of 4H-benzo[b]pyrans via a three-component cyclocondensation of aryl aldehydes, malononitrile, and dimedone has been reported using CeCl3·7H2O as ...
B S Sastry, Gowravaram Sabitha
exaly   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

Pyrane, I. α‐ und γ‐Pyrane

Chemische Berichte, 1961
AbstractMonocyclische α‐ und γ‐Pyronen durch Umsetzung mit aliphatischen und aromatischen Grignard‐Verbindungen einfach und in guten Ausbeuten herstellbar. Die Reaktionen sowie die UV‐ und IR‐Spektren der α‐Pyrane stehen in Einklang mit der cyclischen Struktur.
Rudolf Gompper, Otto Christmann
openaire   +1 more source

Kondensierte Pyrane

Chemische Berichte, 1970
AbstractWie am Beispiel von 4‐Hydroxy‐cumarin und Barbitursäure gezeigt werden konnte, gehen diese β‐Dicarbonylverbindungen mit Aldehyden und Phenylacetylen keine Dreikohlenstoff‐kondensation ein. Es entstehen kondensierte Pyrane durch 1.4‐Addition des Phenylacetylens an das ungesättigte Zwischenprodukt aus Aldehyd und Dicarbonylverbindung.
Karl Ernst Schulte, Volker von Weissenborn, Georg L. Tittel   +2 more
openaire   +1 more source

Disproportionation of pyrans

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1976
1. It was established that the hydrogen atom in sym-octahydroxanthene was a high hydride mobility. 2. The disproportionation of sym-octahydroxanthene was effected using acids and a mechanism was proposed for this reaction. 3. A mechanism was proposed for the formation of pyrylium salts from 1,5-diketones.
V. G. Kharchenko, A. F. Blinokhvatov, K. V. Mityurina, Z. N. Parnes, D. N. Kursanov   +4 more
openaire   +1 more source

2H-pyrans (review)

Chemistry of Heterocyclic Compounds, 1985
Data on methods of synthesis, transformations, and spectroscopy of monocyclic six-membered, oxygen-containing heterocycles, viz., 2H-pyrans, are correlated and systematized for the first time in this review.
O. V. Drygina, A. D. Garnovskii, A. V. Kazantsev   +2 more
openaire   +1 more source