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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2164695Generated: November 2, 2026

Benzaldehyde → 1,1-Diphenylethylene

https://huagongshe.com/reaction/2164695

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzaldehydeHCID 240—
ReactantBenzophenoneHCID 3102—
Reactant1,2-Diphenyl-1-propeneHCID 13070—
ReactantSodium borohydrideHCID 4311764—
ReactantHCID 20069224HCID 20069224—
ReactantHCID 178418373HCID 178418373—
ReactantHCID 178419663HCID 178419663—
Product1,1-DiphenylethyleneHCID 10740—
ProductStilbeneHCID 11502—
ProductPhenyl(isopropenylphenyl)ethaneHCID 20069234—

Reaction Steps

For instance, vinylnaphthalene is prepared by reacting formylnaphthalene with a Grignard reagent such as methylmagnesium iodide, and then dehydrating. Phenyl(vinylphenyl)ethane is prepared by reacting diphenylethane with acetyl chloride in the presence of a Friedel-Crafts catalyst to obtain phenyl(acetylphenyl)ethane, reducing by sodium borohydride, and then dehydrating. Phenyl(isopropenylphenyl)ethane is prepared by reacting phenyl(acetylphenyl)ethane with a Grignard reagent such as methylmagnesium iodide, and then dehydrating. 1,2-Diphenylethylene is prepared by reacting benzaldehyde with benzylmagnesium bromide, and then dehydrating. 1,2-Diphenylpropene is also prepared by a similar method. 1,1-Diphenylethylene is prepared by reacting diphenyl ketone with a Grignard reagent such as methylmagnesium iodide, and then dehydrating.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04506107
Source datasetuspto-grants-1985_03
ORD IDord-237e3faa691941a89550a3a3934e5486
Source noteuspto-grants-1985_03