Results 91 to 100 of about 331 (145)

Synthesen bicyclischer 1,2,6‐Thiadiazine

Archiv der Pharmazie, 1981
Abstractα‐Aminosäureamide aus der Pyrrol‐ Furan‐ und Thiophen‐Reihe werden zu neuen Schwefelheterocyclen umgesetzt. Die Stabilität dieser Verbindungen wird untersucht.
Wolfgang Offermann, Kurt Eger, Hermann J. Roth   +2 more
openaire   +1 more source

Synthesis of N-Aryl-3,5-dichloro-4H-1,2,6-thiadiazin-4-imines from 3,4,4,5-Tetrachloro-4H-1,2,6-thiadiazine

Organic Letters, 2015
Condensation of 3,4,4,5-tetrachloro-4H-1,2,6-thiadiazine with a range of anilines gave 22 N-aryl-3,5-dichloro-4H-1,2,6-thiadiazin-4-imines in 43-96% yields. The scope and limitations of this condensation are briefly investigated. Furthermore, mono- and bis-substitution of the C-3 and C-5 chlorines of 3,5-dichloro-N-phenyl-4H-1,2,6-thiadiazin-4-imine by
Kalogirou, Andreas S., Manoli, Maria, Koutentis, Panayiotis Andreas, Kalogirou, Andreas S., Manoli, Maria, Koutentis, Panayiotis Andreas   +5 more
openaire   +4 more sources

ChemInform Abstract: FUSED 1,2,6‐THIADIAZINES: TETRAHYDROBENZO(B)THIENO(2,3‐C)(1,2,6)THIADIAZINE 2,2‐DIOXIDES

Chemischer Informationsdienst, 1985
AbstractDie durch Ringschluß hergestellten Thiadiazin‐dioxide (II) und (IV) zeigen keine herbizide Wirksamkeit.
P. GOYA, J. LISSAVETZKY, I. ROZAS, M. STUD   +3 more
openaire   +1 more source

Cyclisation chemistry of 4H-1,2,6-thiadiazines

Journal of the Chemical Society, Perkin Transactions 1, 2000
3,5-Dichloro-4H-1,2,6-thiadiazin-4-one 1 condenses rapidly at room temperature with 1,2-diaminobenzene, 2-aminothiophenol and sodium 2-aminophenoxide to give, respectively, the purple thiadiazinoquinoxaline 4a, red thiadiazinobenzothiazine 4b and orange thiadiazinobenzoxazine 4c in almost quantitative yield.
Koutentis, Panayiotis Andreas, Rees, C. W., Koutentis, Panayiotis Andreas, Rees, C. W.   +3 more
openaire   +2 more sources

Chemistry of 4-dicyanomethylene-1,2,6-thiadiazines

Journal of the Chemical Society, Perkin Transactions 1, 2000
The chlorine atoms in 3,5-dichloro-4-dicyanomethylene-1,2,6-thiadiazine 1 are readily displaced by thiophenols in the presence of Hunig’s base, the first at −78 °C and the second at 20 °C to give the orange mono- and bis-arylthio derivatives in high yield (Table 1).
Koutentis, Panayiotis Andreas, Rees, C. W., Koutentis, Panayiotis Andreas, Rees, C. W.   +3 more
openaire   +2 more sources

Structure of 1,2,6‐thiadiazine 1,1‐dioxides

Journal of Physical Organic Chemistry, 1990
AbstractAb initio theoretical calculations were carried out on the three tautomers, NH, OH and CH, of 1,2,6‐thiadiazine 1,1‐dioxides. Different basis sets were employed in order to obtain an adequate description of these cyclic sulphamide derivatives.
José Elguero, Pilar Goya, Ana Martínez, Isabel Rozas, Otilia Mó, José Luis G. De Paz, Manuel Yáñez   +6 more
openaire   +1 more source

Fused 1,2,6‐Thiadiazines Tetrahydrobenzo[b]thieno[2,3‐c] [1,2,6]thiadiazine 2,2‐Dioxides

Archiv der Pharmazie, 1984
AbstractSuitably substituted derivatives of tetrahydrobenzo[b]thiophene were treated with sulfamoyl chlorides to give sulfamoyl esters and nitriles. Ring closure of these compounds, under various conditions, afforded tetrahydrobenzo[b]thieno[2,3‐c][1,2,6]thiadiazine 2,2‐dioxides. Their herbicidal activities were tested.
Pilar Goya, Jaime Lissavetzky, Isabel Rozas, Manfred Stud   +3 more
openaire   +1 more source

ChemInform Abstract: The Synthesis of Pyrrolo[2,3‐c][1,2,6]thiadiazine‐5‐carbonitriles from (4H‐1,2,6‐Thiadiazin‐4‐ylidene)malononitriles.

ChemInform, 2010
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Andreas S. Kalogirou, Panayiotis A. Koutentis, Maria D. Rikkou   +2 more
openaire   +2 more sources

The synthesis of pyrrolo[2,3-c][1,2,6]thiadiazine-5-carbonitriles from (4H-1,2,6-thiadiazin-4-ylidene)malononitriles

Tetrahedron, 2010
Abstract [3,5-Bis(dialkylamino)-4H-1,2,6-thiadiazin-4-ylidene]propanedinitriles 6a–c, react with sodium methoxide or ethoxide to give the corresponding 6-alkoxy-4-dialkylamino substituted pyrrolo[2,3-c][1,2,6]thiadiazine-5-carbonitriles 7a–f in variable yields.
Kalogirou, Andreas S., Koutentis, Panayiotis Andreas, Rikkou-Kalourkoti, Maria D., Kalogirou, Andreas S., Koutentis, Panayiotis Andreas, Rikkou-Kalourkoti, Maria D.   +5 more
openaire   +2 more sources