4826-05-5

Upstream product

• 4826-01-1 1-methanesulfonylamino-3-phenyl-1λ⁴-benzo[1,2,4]thiadiazine 
• 1527-91-9 N-phenylbenzamidine 
• 4825-98-3 3-phenyl-1-(toluene-4-sulfonylamino)-1λ⁴-benzo[1,2,4]thiadiazine 

Downstream Products

• 4826-06-6 7-chloro-3-phenyl-2H-1,2,4-benzothiadiazine 1-oxide 
• 883-93-2 2-Phenylbenzothiazole 
• 18818-44-5 3‐phenyl‐2H‐benzo[e][1,2,4]thiadiazine 1,1‐dioxide 
• 41274-42-4 1-chloro-3-phenyl-1λ⁴-benzo[1,2,4]thiadiazine 1-oxide 
• 20043-30-5 7-chloro-3-phenyl-2H-1,2,4-benzothiadiazine 
• 74063-26-6 3-phenyl-4H-benzo[1,2,4]thiadiazine 
• 1571901-73-9 1-fluoro-3-phenyl-1λ⁴-benzo[1,2,4]thiadiazine-1-oxide 
• 20043-33-8 1-(4-carboxy-benzenesulfonylamino)-3-phenyl-1λ⁴-benzo[1,2,4]thiadiazine 1-oxide 
• 20043-39-4 7-chloro-3-phenyl-2H-benzo[e][1,2,4]thiadiazine 1,1-dioxide 
• 4826-14-6 3-phenyl-1-(toluene-4-sulfonylamino)-1λ⁴-benzo[1,2,4]thiadiazine 1-oxide 
• 41274-44-6 1-morpholin-4-yl-3-phenyl-1λ⁴-benzo[1,2,4]thiadiazine 1-oxide 
• 4825-98-3 3-phenyl-1-(toluene-4-sulfonylamino)-1λ⁴-benzo[1,2,4]thiadiazine 

Relevant academic research and scientific papers

Experimental and theoretical studies of fused-ring persistent [1,2,4]thiadiazinyl radicals

Five persistent radicals 1a-1e were generated by the oxidation of 4H-[1,2,4]thiadiazines 2a-2e and studied with ESR and UV-vis spectroscopy. Three of the radicals, 1a, 1d, and 1e, were generated in high yields (>90%) using either SO2Cl2/amine in toluene or AgO/K2CO 3 in a toluene/ MeCN mixture. Halogenated radicals 1d and 1e were sufficiently stable for chromatographic isolation and vacuum sublimation. The solution stability of the fluorinated 1d was measured at t1/2 ≈ 4 months in the absence of oxygen, and 1e at t1/2 ≈ 40 min in the presence of air. The crystal and molecular structures of 1d were determined by X-ray crystallography showing columns of parallel almost evenly spaced planar heterocycles connected by infinite ...N...S... chains. Cyclic voltammetry of Id and 1e shows reversible reduction waves at about 0 V and irreversible oxidations at about 1.2 V. Spectral and electrochemical properties of 1 were well reproduced by DFT methods.