5543-97-5Relevant articles and documents
Method for preparing alpha-aryl ketone compound by using palladium complex
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Paragraph 0043-0047, (2021/07/17)
The invention relates to a method for preparing an alpha-aryl ketone compound by using a palladium complex, which comprises the steps of in the presence of alkali, taking ketone and halogenated hydrocarbon as raw materials, taking the palladium complex containing an ortho-carborane benzothiazole structure as a catalyst, and carrying out alpha-halogenation reaction at room temperature to prepare the alpha-aryl ketone compound. Compared with the prior art, the palladium complex containing the ortho-carborane benzothiazole structure is applied to catalysis of the alpha-halogenation reaction of ketone and halogenated hydrocarbon, the alpha-aryl substituted ketone compound is prepared through a one-pot method, synthesis of the alpha-aryl ketone compound at room temperature by using simple, easily available and cheap raw materials is achieved, and the method has the advantages of low catalyst use equivalent, mild reaction conditions, more catalytic substrates, high substrate universality and high yield.
Metal Free, Direct and Selective Deoxygenation of α-Hydroxy Carbonyl Compounds: Access to α,α-Diaryl Carbonyl Compounds
Kumar, Anil,Sandeep,Venugopalan, Paloth
, (2020/04/27)
An efficient, metal free, direct and selective deoxygenation of α-hydroxy carbonyl compounds is achieved with the aid of catalytic amount of aqueous HClO4 (70 %) and triethylsilane as hydride source. A variety of α-hydroxy-α,α-diaryl carbonyl compounds are selectively deoxygenated to give α,α-diaryl carbonyl compounds in good to excellent yields. Intermediacy of α-keto carbenium ion is proposed on the basis of some control experiments and atmospheric pressure chemical ionization mass spectral analysis.
α,α-Diarylethylene Glycols as Valuable Precursor for Synthesis of 1,1-Diarylethenes and α,α-Diaryl Acetaldehydes
Tiwari, Praveen Kumar,Sivaraman, Balasubramaniam,Aidhen, Indrapal Singh
, p. 3594 - 3605 (2017/07/22)
Towards assembling of diarylmethine unit present in biologically important molecules, we have developed a new Weinreb Amide (WA) based building block derived from glycolic acid. The WA functionality present in this building block permits the sequential addition of various arylmagnesium bromide reagents in a controlled manner that enables assembly of a diarylmethine unit. The developed synthetic route provides easy access to important diarylethenes and α,α-diarylethylene glycols. The synthesized α,α-diarylethylene glycols provide access to synthetically important symmetrical and unsymmetrical α,α-diaryl acetaldehydes as valuable intermediates.
