Results 1 to 10 of about 3,845 (106)

Oxidations of 4 H ‐1,2,6‐Thiadiazines

ChemistrySelect, 2022
Abstract The oxidation of various non‐S‐oxidized 4 H ‐1,2,6‐thiadiazines with N 2 O 4 , meta ‐chloroperbenzoic acid ( m
Andreas S. Kalogirou, Andreas Kourtellaris, Panayiotis A. Koutentis   +2 more
wiley   +3 more sources

A Qualitative Comparison of the Reactivities of 3,4,4,5-Tetrachloro-4H-1,2,6-thiadiazine and 4,5-Dichloro-1,2,3-dithiazolium Chloride [PDF]

Molecules, 2015
The high yielding transformations of 3,4,4,5-tetrachloro-4H-1,2,6-thiadiazine into 3,5-dichloro-4H-1,2,6-thiadiazin-4-one (up to 85%) and 2-(3,5-dichloro-4H-1,2,6-thiadiazin-4-ylidene)malononitrile (up to 83%) have been investigated and compared to the ...
Andreas S. Kalogirou, Panayiotis A. Koutentis   +1 more
doaj   +3 more sources

The Photochemical Mediated Ring Contraction of 4<i>H</i>-1,2,6-Thiadiazines To Afford 1,2,5-Thiadiazol-3(2<i>H</i>)-one 1-Oxides. [PDF]

Org Lett, 2023
1,2,6-Thiadiazines treated with visible light and 3O2 under ambient conditions are converted into difficult-to-access 1,2,5-thiadiazole 1-oxides (35 examples, yields of 39–100%).
Broumidis E, Thomson CG, Gallagher B, Sotorríos L, McKendrick KG, Macgregor SA, Paterson MJ, Lovett JE, Lloyd GO, Rosair GM, Kalogirou AS, Koutentis PA, Vilela F.   +12 more
europepmc   +2 more sources

Novel Mono-Substituted 4H-1,2,6-Thiadiazines with Antioxidant and Anti-Lipoxygenase Activities. [PDF]

Int J Mol Sci
Τhe synthesis of a novel series of mono-substituted 4H-1,2,6-thiadiazine derivatives was reported, aiming at enhancing antioxidant and lipoxygenase inhibitory activities via pharmacophore combination.
Charissopoulos E, Koutentis PA, Kalogirou AS, Pontiki E.   +3 more
europepmc   +2 more sources

Synthesis of Oligomeric 4 H ‐1,2,6‐Thiadiazines

ChemistrySelect
Abstract The synthesis of oligomeric amino‐4 H ‐1,2,6‐thiadiazines, with terminal phenyl groups, containing up to four thiadiazine units is reported. The synthesis started from 3,5‐dichloro‐4 H ‐1,2,6‐thiadiazin‐4‐one and a key ...
Andreas S. Kalogirou, Andreas Kourtellaris, Panayiotis A. Koutentis   +2 more
openaire   +2 more sources

Correction to "The Photochemical Mediated Ring Contraction of 4<i>H</i>-1,2,6-Thiadiazines To Afford 1,2,5-Thiadiazol-3(2<i>H</i>)-one 1-Oxides". [PDF]

Org Lett
Broumidis E, Thomson CG, Gallagher B, Sotorríos L, McKendrick KG, Macgregor SA, Paterson MJ, Lovett JE, Lloyd GO, Rosair GM, Kalogirou AS, Koutentis PA, Vilela F.   +12 more
europepmc   +2 more sources

Reactions of 4H-1,2,6-Thiadiazine Sulfides [PDF]

Molbank, 2022
3,5-Dichloro-4H-1,2,6-thiadiazin-4-one reacts with benzo[d]thiazole-2-thiol (1 equiv) and triethylamine (1 equiv) to give 3-(benzo[d]thiazol-2-ylthio)-5-chloro-4H-1,2,6-thiadiazin-4-one in 71% yield. The reactivity of this compound with methoxide is explored and compared with that of 3-chloro-5-(phenylthio)-4H-1,2,6-thiadiazin-4-one.
Andreas S. Kalogirou, Panayiotis A. Koutentis   +1 more
  +11 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

Mechanochemically‐Assisted Passerini Reactions: A Practical and Convenient Method for the Synthesis of Novel α‐Acyloxycarboxamide Derivatives

ChemistryOpen, Volume 12, Issue 5, May 2023., 2023
The formation of novel α‐acyloxycarboxamides from a carboxylic acid/phenol, an aldehyde/ketone and substituted isocyanide was investigated under mechanochemical conditions in the absence of organic solvents or in the presence of a catalytic amount of H2SO4−SiO2 (solid‐assisted grinding, SAG) to create libraries of structurally complicated molecules for
Sodeeq Aderotimi Salami, Justin Bazibuhe Safari, Vincent J. Smith, Rui W. M. Krause   +3 more
wiley   +1 more source

Mechanochemistry: New Tools to Navigate the Uncharted Territory of “Impossible” Reactions

ChemSusChem, Volume 15, Issue 17, September 7, 2022., 2022
Mission impossible: Mechanosynthesis is erroneously perceived as an enabling tool for only making greener well‐known solution‐based processes. Modern mechanochemistry is, above all, an effective tool to open synthetic paths not accessible by following conventional and well‐known pathways already reported in the literature for the classical chemistry in
Federico Cuccu, Lidia De Luca, Francesco Delogu, Evelina Colacino, Niclas Solin, Rita Mocci, Andrea Porcheddu   +6 more
wiley   +1 more source