115691-16-2

Upstream product

• 115691-20-8 6-phenyl-6-trimethylsilyl-5,6-dihydro-2H-thiopyran 
• 79841-55-7 trimethylsilyl phenyl thioketone 
• 188560-66-9 (1-Allylsulfanyl-but-3-enyl)-benzene 
• 70-11-1 α-bromoacetophenone 
• 2168-99-2 n-hexylbenzyl sulfoxide 
• 106-99-0 buta-1,3-diene 
• 621-08-9 Dibenzyl sulfoxide 
• 123-38-6 propionaldehyde 
• 104-87-0 4-methyl-benzaldehyde 
• 134001-25-5 Methyl-naphthalen-1-yl-phenyl-(2-phenyl-3,6-dihydro-2H-thiopyran-2-yl)-silane 
• 930-68-7 cyclohexenone 
• 78-85-3 2-methylpropenal 

Downstream Products

• 118201-74-4 3,4-dimethyl-6-phenyl-5,6-dihydro-2H-thiopyran S,S-dioxide 

Relevant academic research and scientific papers

METAL COMPLEX-CATALYZED SYNTHESIS OF DIHYDROTHIAPYRANS FROM DIALKYL SULFOXIDES AND 1,3-DIENES

A preparative method has been developed for the synthesis of dihydrothiapyrans from dialkyl sulfoxides and 1,3-dienes, catalyzed by palladium and nickel complexes.The scope of this reaction has been assessed, and a mechanism proposed, using 1,3-dienes and sulfoxides of varying structure. Keywords: synthesis, dihydrothiapyrans, catalysts, mechanism, sulfides, 1,3-dienes.

Catalytic ring-closing olefin metathesis of sulfur-containing species: Heteroatom and other effects

This paper describes studies of the ring-closing metathesis of dialkyl sulfides and disulfides catalyzed by molybdenum and ruthenium alkylidenes. In general, the highest yields of ring-closed products were obtained using the molybdenum catalysts. Product yields were also strongly influenced by the substitution pattern about the double bonds: the yield of ring-closed products was found to decrease as the degree of substitution increased. These effects and other heteroatom effects are discussed.

SYNTHETIC USEFULNESS OF SILYL THIOKETONES: FUNCTIONALIZATION OF THEIR PRIMARY ADDUCTS THROUGH DESILYLATION AND TRAPPING BY CARBON ELECTROPHILES.

Desilylation of either α-silyl sulphides or silyl dihydrothiopyrans (easily obtained from silyl thiones as primary adducts), when performed in the presence of carbon electrophiles (aldehydes or ketones), offers an easy entry to carbofunctionalised products.

Chemistry of Silylated Thioketones. Part 2. Cycloaddition Reactions with 1,3-Dienes

Trimethylsilylphenyl- and triphenylsilylphenyl thioketones easily undergo -cycloadditions with cyclic and open chain 1,3-dienes at room temperature to give silylated thiabicycloheptenes and dihydrothiopyrans in very good yields.With cyclopentadiene the reaction produces exclusively the endo-silylated adducts.Sulphur oxidation and desilylation of the adducts were also investigated.