Английская Википедия:1,2-Dithietane

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Версия от 02:34, 18 декабря 2023; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{chembox | verifiedrevid = 477204461 | ImageFile=1,2-dithietane.png | ImageSize=120px | PIN=1,2-Dithietane | SystematicName = 1,2-Dithiacyclobutane | OtherNames= |Section1={{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 11270017 | InChI = 1/C2H4S2/c1-2-4-3-1/h1-2H2 | InChIKey = UPNNXUSUOSTIIM-UHFFFAOYAY | StdInChI_Ref = {{stdinchicite|...»)
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1,2-Dithietane is a dithietane. It is a heterocyclic compound with a four-membered ring. Two sulfur atoms are adjacent, and the molecule is saturated. 1,2-Dithietane has not been produced as of 2000. The combination of ring strain, and lone pairs of electrons, which repel each other, on the sulfur atoms makes the sulfur-sulfur bond too weak to produce the molecule. However a few derivatives are known. 3,4-Diethyl-1,2-dithietane 1,1-dioxide has one sulfur fully oxidised. Dithiatopazine is a tricyclic compound with the -S-S- as a bridge.[1][2] 1,2-Dithietan-3-one, the ketone of 1,2-dithietane, was produced in 2008 by reacting α-dithiolactone with ethoxycarbonylformonitrile oxide.[3] 4,4-di-tert-butyl-1,2-dithietan-3-one and the spiro compound 4,4-(2',2',6',6'-tetramethylcyclohexyl)1,2-dithietan-3-one have also been made.[3]

1,2-Dithietane was claimed to have been made by reacting 1,2-ethanedithiol with iodine, but the major product was an eight-membered ring.[4]

A reaction of 2,3-dimercapto-1-propanol with 3-methyllumiflavin transiently produced 3-hydroxy-1,2-dithietane. This dithietane polymerised under light, breaking and reforming the S-S bonds to form a long chain -SSCH(OH)CH2-.[5]

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