404-73-9

Upstream product

• 404-74-0 2-nitro-4-trifluoromethylsulfanyl-aniline 
• 7447-39-4 copper(II) chloride 
• 35964-48-8 1,1'-disulphanediylbis(4-chloro-3-nitrobenzene) 
• 76-05-1 trifluoroacetic acid 

Relevant academic research and scientific papers

New 4-pentafluorosulfanyl and 4-perfluoroalkylthio derivatives of 1-chloro-2-nitro- and 1-chloro-2,6-dinitrobenzenes

New 4-pentafluorosulfanyl and 4-perfluoroalkylthio derivatives of 1-chloro-2-nitrobenzene and 1-chloro-2,6-dinitrobenzene were prepared from the corresponding bis(4-chloro-3-nitrophenyl)disulfide and bis(4-chloro-3,5-dinitrophenyl)disulfide, respectively. The SF5 derivatives were obtained by fluorination of the disulfides with AgF2 according to Sheppard's method, while perfluoroalkylation was carried out by means of thermolytic reactions with xenon(II) bis(perfluoroalkylcarboxylates). The introduction of fluorine-containing, electron-withdrawing substituents into the aromatic ring (in the presence of other deactivating groups) reinforces the activation of the halogen substituent towards nucleophilic attack. Several nucleophilic substitution reactions have been carried out with these compounds, and as a result, some N- and S-containing groups were introduced in the benzene ring. For example, the previously unknown SF5, CF3S, and C2F5S analogues of trifluralin (Treflan) were prepared and characterized. Additional synthetic possibilities for heterocyclic chemistry are presented on the basis of reactions of the new 1-chloro-2,6-dinitrobenzene derivatives with ethyl thioglycolate wherein fluorine-containing derivatives of benzothiazole N-oxide were obtained as the main products.

Synthesis of aryl perfluoroalkyl sulfides from aromatic disulfides

Thermolysis of xenon(II) bis(perfluoroalkanecarboxylates) in the presence of diaryl disulfides occurs through the S-S bond cleavage to form dihalo-, halonitro-, and halodinitrophenyl perfluoroalkyl sulfides. The latter type of compounds was obtained for the first time. The main side process is the perfluoroalkylation of the aromatic ring.

Heterocyclic compounds

The invention provides compounds of formula (I) having nematicidal, insecticidal, acaricidal and fungicidal properties, compositions comprising them and processes and intermediates for their preparation: STR1 wherein: X is oxygen or sulphur; n is 0, 1 or 2; R1, R2, R3, and R4 are as described in the specification.