Results 161 to 170 of about 37,751 (208)

Merocyaninfarbstoffe aus 1,2,4-Triazin

Monatshefte für Chemie, 1968
Hydrazinderivate von 1,2,4-Triazinen liefern mit Acetessigester Pyrazolonderivate. Diese kondensieren sich mit Salzen quartarer heterocyclischer Basen zu Merocyaninfarbstoffen. Darstellung und Spektren von drei Typen solcher Farbstoffe werden beschrieben.
Engelbert Kiša, Jaromír Hadáček
openaire   +1 more source

Kondensierte Dihydro‐1,2,4‐triazine

Archiv der Pharmazie, 1987
AbstractHydrazone von α‐Aminoketonen mit cyclischem Aminanteil ergeben mit Quecksilber (II)‐EDTA eine Cyclodehydrierung zu entspr. kondensierten Dihydrotriazinen.
Hans Möhrle, Peter Schillings
openaire   +1 more source

Condensed 1,2,4‐Triazines, III

Archiv der Pharmazie, 1980
AbstractAlkylation of 3‐mercaptophenanthreno[9,10‐e]‐1,2,4‐triazine (1b) yielded the S‐alkyl derivatives 2 a‐d. Amination of 1a afforded the 3‐amino derivatives 3a‐h. Reaction of 1a with hydrazine hydrate gave 3‐hydrazinophenanthreno[9,10‐e]‐1,2,4‐triazine (4) which underwent cyclisation with nitrous, formic or acetic acids giving the phenanthreno[9,10‐
Vishnu Ji Ram, Hrishi Kesh Pandey
openaire   +1 more source

ChemInform Abstract: 1,2,4‐TRIAZINES. SYNTHESIS OF SELECTED MEMBERS OF THE S‐TRIAZOLO(3,4‐F)(1,2,4)TRIAZINE AND TETRAZOLO(1,5‐F)(1,2,4)TRIAZINE

Chemischer Informationsdienst, 1979
Abstract3‐Amino‐l ,2,4‐triazin (I) liefert bei der Oxidation das Triazinon (IIa), das zu (IIb) bromiert wird und die Austauschprodukte (IIc) und (IId) gibt.
openaire   +1 more source

Nucleophilic substitution of 1,2,4‐triazines

Journal of Heterocyclic Chemistry, 1985
AbstractThe reaction of 3‐(methylthio)‐5‐carbethoxy‐1,2,4‐triazine (5) with ammonia was found to yield products from not only ammonia but also methanethiolate displacements. An account of the transformations and the products observed is given. The 3‐position of 3,6‐bis(methylthio)‐5‐carbamoyl‐1,2,4‐triazine (7) was shown to be more reactive than the 6 ...
openaire   +1 more source

Triazines: Syntheses and Inverse Electron-Demand Diels–Alder Reactions

Chemical Reviews, 2021
Fa-Guang Zhang, Jun-An Ma, Xiaodong Tang
exaly  

Synthesis of 1,2,4-Triazine -Oxides from 1,2,4-Triazines

2004
C. W. Lindsley, M. E. Layton
openaire   +1 more source

Conversion of 1,2,4-Triazin-5(2)-ones or 1,2,4-Triazine-5(2)-thiones into 1,2,4-Triazines

2004
C. W. Lindsley, M. E. Layton
openaire   +1 more source

Metal-Organic Materials With Triazine-Based Ligands: From Structures to Properties and Applications

Coordination Chemistry Reviews, 2021
Xian-He Bu, Ze Chang, Mei-Hui Yu
exaly  

1,2,4-Triazines. IV. Synthesis and characterization of 1,2,4-triazine N-oxides

The Journal of Organic Chemistry, 1971
William W. Paudler, Teh-Kuei Chen
openaire   +1 more source