118966-45-3

Upstream product

• 104-87-0 4-methyl-benzaldehyde 
• 105071-90-7 triphenylbismuthonio-4,4-dimethyl-2,6-dioxocyclohexane-1-ide 
• 35024-12-5 (4,4-dimethyl-2,6-dioxo-cyclohexyl)-phenyl-iodonium betaine 
• 126-81-8 dimedone 
• 139484-11-0 3-hydroxy-2-[(2-hydroxy-4,4-dimethyl-6-oxocyclohex-1-en-1-yl)(4-methylphenyl)methyl]-5,5-dimethylcyclohex-2-en-1-one 

Relevant academic research and scientific papers

Selective synthesis of spiro and dispiro compounds using Mn(III)-based oxidation of tetracarbonyl compounds

The Mn(III)-based oxidation of methylenebis(cyclohexanedione)s and methylenebis(piperidinedione)s as a tetracarbonyl compound was investigated under various conditions, selectively producing spiro dihydrofurans and dispiro cyclopropanes depending on the solvent. The mechanism for the formation of the spiro dihydrofurans and dispiro cyclopropanes was discussed. In addition, a simple synthesis of a new type of alkaloid, 3,4,6,7,8,10-hexahydro-1H-pyrano[3,2-c:5,6-c’]dipyridine-1,9(2H)-diones, was demonstrated.

A new iodonium ylide-based three-component reaction leading to 2-spirosubstituted dihydrofurans under microwave irradiation

A new iodonium ylide-based three-component reaction for the synthesis of highly functionalized 2-spirosubstituted dihydrofurans starting from readily available common reactants has been developed under microwave irradiation. The procedure is facile, avoid

Reaction of Stabilized Bismuthonium Ylides with Aldehydes. A Novel Reaction Mode of the Heaviest Group V Element Ylide

Stabilized bismuthonium ylides, triphenylbismuthonio-4,4-dimethyl-2,6-dioxocyclohexane-1-ide and triphenylbismuthonio-4,4-dimethyl-2,6-dioxo-3,5-dioxan-1-ide, react with aldehydes to afford three types of products; tetraacylcyclopropanes, dihydrofurans, and α,β-unsaturated carbonyl compounds, the relative importance of these depending greatly on the ylides, aldehydes, and reaction conditions employed.