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Upstream product

• 1871-76-7 diphenylacetic acid chloride 
• 2845-00-3 allylmercuric iodide 
• 556-56-9 allyl iodid 
• 525-06-4 diphenyl ketene 

Relevant academic research and scientific papers

Environment-friendly method for synthesizing propenyl ketone compound

The invention discloses an environment-friendly method for synthesizing a propenyl ketone compound. The method comprises the following steps: subjecting an aldehyde compound and allyl bromide to a Barbier reaction in the presence of metal powder, so as to obtain an allyl alcohol compound; and subjecting the allyl alcohol compound to a structural isomerization reaction in the presence of a catalyst, thereby obtaining the propenyl ketone compound. The method disclosed by the invention has the advantages of short synthesis route, mild reaction conditions, simplicity in operation, readily available raw materials, and the like and has relatively high academic research value and market economy significance.

Regioselective Allylation of Ketenes Promoted by SmI2

Ketenes react with various allylic halides mediated by 2 equiv. samarium(II) diiodide (SmI2) to the ketenes to afford allylated ketones in good yields.In the reaction with γ-substituted allylic halides, the regioselectivity is influenced by the olefinic geometry of allylic halides.By using γ-substituted (E)-allylic halides, the allylation proceeds on the less hindered site (α-position) of allylic groups predominantly and the tendency was enhanced by the addition of HMPA.