Results 21 to 30 of about 1,673 (99)

3,5-Bis[5-(thiazol-2-yl)thien-2-yl]-4H-1,2,6-thiadiazin-4-one

Molbank, 2019
Stille coupling of 3,5-bis(5-bromothien-2-yl)-4H-1,2,6-thiadiazin-4-one (10) with 2-(tri-n-butylstannyl)thiazole and Pd(Ph3P)2Cl2 in PhMe, at ca. 110 °C, for 2 h, gave 3,5-bis[5-(thiazol-2-yl)thien-2-yl]-4H-1,2,6-thiadiazin-4-one (9) in 81% yield.
Andreas S. Kalogirou, Panayiotis A. Koutentis   +1 more
doaj   +2 more sources

2-[3,5-Bis(5-bromothien-2-yl)-4H-1,2,6-thiadiazin-4-ylidene]-malononitrile

Molbank
Bromination of 2-[3,5-di(thien-2-yl)-4H-1,2,6-thiadiazin-4-ylidene]-malononitrile with N-bromosuccinimide in THF, at ca. 20 °C for 24 h gave 2-[3,5-bis(5-bromothien-2-yl)-4H-1,2,6-thiadiazin-4-ylidene]-malononitrile in 82% yield.
Andreas S. Kalogirou, Andreas Kourtellaris, Panayiotis A. Koutentis   +2 more
doaj   +2 more sources

Chemistry of 3,5‐Dichloro‐4H‐1,2,6‐thiadiazine‐4‐thione

ChemistrySelect, Volume 8, Issue 45, December 5, 2023., 2023
3,5‐Dichloro‐4H‐1,2,6‐thiadiazine‐4‐thione was prepared by thionation of 3,5‐dichloro‐4H‐1,2,6‐thiadiazine‐4‐one. The chemistry of this thione was briefly investigated under thermal conditions and treatment with carbon nucleophiles, dienes and triphenylphosphine. The structures of several new products is supported by X‐ray crystallography.
Andreas S. Kalogirou, Andreas Kourtellaris, Panayiotis A. Koutentis   +2 more
wiley   +1 more source

Oxidations of 4H‐1,2,6‐Thiadiazines

ChemistrySelect, Volume 7, Issue 45, December 6, 2022., 2022
The oxidation of various non‐S‐oxidized 4H‐1,2,6‐thiadiazines to sulfoxides and sulfones was investigated using the oxidants N2O4, m‐CPBA, Oxone, PIFA and PIDA. The scope and regioselectivity of the oxidation was examined, while the structures of several new products is supported by X‐ray crystallography.
Andreas S. Kalogirou, Andreas Kourtellaris, Panayiotis A. Koutentis   +2 more
wiley   +1 more source

1,2,6-Thiadiazine 1-Oxides : Unsaturated Three-Dimensional S,N-Heterocycles from Sulfonimidamides

, 2020
Unprecedented three-dimensional 1,2,6-thiadiazine 1-oxides have been prepared by an aza-Michael-addition/cyclization/condensation reaction sequence starting from sulfonimidamides and propargyl ketones.
Wolter, Nadja Anna, Rissanen, Kari, Passia, Marco Thomas, Bolm, Carsten, Puttreddy, Rakesh, Schöbel, Jan-Hendrik   +5 more
core   +2 more sources

Crystal structure, Hirshfeld analysis and a molecular docking study of a new inhibitor of the Hepatitis B virus (HBV): ethyl 5-methyl-1,1-dioxo-2-{[5-(pentan-3-yl)-1,2,4-oxadiazol-3-yl]methyl}-2H-1,2,6-thiadiazine-4-carboxylate

Acta Crystallographica Section E: Crystallographic Communications, 2020
The title compound, C15H22N4O5S, was prepared via alkylation of 3-(chloromethyl)-5-(pentan-3-yl)-1,2,4-oxadiazole in anhydrous dioxane in the presence of triethylamine. The thiadiazine ring has an envelope conformation with the S atom displaced by 0.4883 
Alexandre V. Ivachtchenko, Sergiy M. Kovalenko, Dmitry V. Kravchenko, Oleg D. Mitkin, Vladimir V. Ivanov, Thierry Langer   +5 more
doaj   +1 more source

1,2,6-Thiadiazin-3,5(2H,6H)-dione 1,1-dioxide derivatives: crystal structure, physico-chemical and biological properties

, 2022
5 pags., 3 figs., 8 tbs.In a previous paper (1) we carried out a comparative study between the physicochemical properties of 1,2,6-thiadiazine 1,l-dioxide derivatives and related pyrazoles.
Ochoa, Carmen, Martínez-Ripoll, Martín, Goya, Pilar, Nieves, Rosa, Rodellas, Carmen, García-Blanco, Severino   +5 more
core   +1 more source

Synthesis of 5′-Chlorospiro(benzo[d][1,3]dioxole-2,4′-[1,2,6]thiadiazin)-3′-amine and 10-Chloro-1,4-dioxa-8-thia-7,9-diazaspiro[4.5]deca-6,9-dien-6-amine

Molbank
Reactions of 3′,5′-dichlorospiro(benzo[d][1,3]dioxole-2,4′-[1,2,6]thiadiazine) or 6,10-dichloro-1,4-dioxa-8-thia-7,9-diazaspiro[4.5]deca-6,9-diene with ammonia in MeCN, at ca.
Andreas S. Kalogirou, Panayiotis A. Koutentis   +1 more
doaj   +1 more source

Synthesis and Physico-Chemical Properties of 6- and 7-Monosubstituted Pyrazino|2,3-c̱|-1,2,6-thiadiazine 2,2-Dioxides

Pteridines, 1990
Selective procedures for the synthesis of 6- and of 7-monosubstituted derivatives of pyrazinoI2,3-c̱|-1 ,2,6- thiadiazine 2,2-dioxide and their reactions with N-bromosuccinimide are reported.
Alkorta Ibon, Goya Pilar, Paez Juan Antonio, Pfleiderer Wolfgang   +3 more
doaj   +1 more source

4H-1,2,6-Thiadiazine-containing donor–acceptor conjugated polymers: synthesis, optoelectronic characterization and their use in organic solar cells

, 2018
A 4H-1,2,6-thiadiazine motif as a new acceptor for D–A conjugated polymers.
Vasilis G. Gregoriou, Panayiotis A. Koutentis, Andreas S. Kalogirou, Elisavet Tatsi, Georgia A. Zissimou, Apostolos Avgeropoulos, Tengling Ye, Athanasios Katsouras, Christos L. Chochos   +8 more
core   +1 more source