116196-93-1

Basic information

• Product Name: 2-methyl-8-tetrahydro-2H-thiopyran-4-yldibenzo[b,e]thiepin-11(6H)-one
• Synonyms: 2-methyl-8-tetrahydro-2H-thiopyran-4-yldibenzo[b,e]thiepin-11(6H)-one
• CAS NO: 116196-93-1
• Molecular Formula: C20H20OS2
• Molecular Weight: 340.5022
• Mol File: 116196-93-1.mol
• Article Data: 1

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2-methyl-8-tetrahydro-2H-thiopyran-4-yldibenzo[b,e]thiepin-11(6H)-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methyl-8-tetrahydro-2H-thiopyran-4-yldibenzo[b,e]thiepin-11(6H)-one(116196-93-1)
• EPA Substance Registry System: 2-methyl-8-tetrahydro-2H-thiopyran-4-yldibenzo[b,e]thiepin-11(6H)-one(116196-93-1)

Safety Data

• Hazardous Substances Data: 116196-93-1(Hazardous Substances Data)

Upstream product

• 32358-88-6 4-Bromotetrahydrothiopyran 
• 5202-11-9 2-methyldibenzothiepin-11(6H)-one 

Relevant articles and documents

POTENTIAL ANTIHISTAMINE AGENTS: 4-(6,11-DIHYDRODIBENZOTHIEPIN-11-YLIDENE)-1-METHYLTETRAHYDROTHIOPYRANIUM IODIDE AND SIMILAR SULFONIUM SALTS DERIVED FROM RELATED TRICYCLIC SYSTEMS

Thioxanthone, 10,11-dihydrodibenzocyclohepten-5-one, dibenzothiepin-11(6H)-one, its 2-methyl derivative, and thieno-2-benzothiepin-4(9H)-one were reacted with 4-tetrahydrothiopyranylmagnesium bromide and the obtained tertiary alcohols IVabc, VIc, and XIX were dehydrated to the olefinic sulfides IXabc, Xc, and XXI.Addition of methyl iodide afforded the title compounds XIabc, XIIc, and XXII.The Grignard reactions were accompanied by the 1,6-addition giving the ketones XVI-XVIII as by-products.The reductive properties of tetrahydrothiopyranylmagnesium bromide were most striking in the case of reaction with 2-chlorothioxanthone; the isolation of thioxanthene and thioxanthone showed that nuclear dehalogenation took also place.Reactions of 11-chloro-6,11-dihydrodibenzothiepin and benzhydryl chloride with tetrahydrothiopyran-4-ol gave the sulfides XXV and XXVIII; whereas the latter reacted with methyl iodide under the formation of sulfonium salt XXIX, the former was cleaved and gave 4-hydroxyl-1-methyltetrahydrothiopyranium iodide (XXVI).The sulfonium salts are free of the central effects but their antihistamine activity is rather low.