61752-65-6

Upstream product

• 1201-93-0 1-phenyl-3-dimethylaminoprop-2-enone 
• 925-90-6 ethylmagnesium bromide 
• 123-38-6 propionaldehyde 
• 70-11-1 α-bromoacetophenone 
• 49851-31-2 α-bromovalerophenone 
• 4250-81-1 1-phenyl-1-pentyne 
• 20913-05-7 (Benzoylmethylene)triphenylphosphorane 
• 536-74-3 phenylacetylene 
• 98-86-2 acetophenone 
• 61836-09-7 2-Methylsulfanyl-1-phenyl-pentan-1-one 

Downstream Products

• 854461-65-7 2-ethyl-1,4-diphenylbutane-1,4-dione 
• 61831-63-8 2-phenyl-3-n-propylquinoline 
• 1009-14-9 phenyl butyl ketone 
• 1008533-99-0 C₂₂H₃₄OSi 

Relevant academic research and scientific papers

Nickel-catalyzed remote hydrosilylation of unconjugated enones with bulky triphenylsilane

Herein we describe a nickel-catalyzed remote hydrosilylation of unconjugated enones with bulky triphenylsilane. A range ofZ-silyl enol ethers are obtained as major isomers due to the process of nickel triggered alkene isomerization. Notably, some specific

Method for preparing phenyl propenone compound by catalyzing phenylacetylene through molecular sieve

The invention belongs to the field of molecular sieve catalysis and organic synthesis, and discloses a method for preparing a phenyl propenone compound by catalyzing phenylacetylene through a molecular sieve, which comprises the following steps: adding a phenylacetylene compound I, aldehyde II and a molecular sieve catalyst into a small reaction kettle without adding an organic solvent and any other assistants; performing stirring to react for 0.25-6 hours under the condition of heating at 30-90 DEG C, cooling the reaction kettle to room temperature, performing diluting with ethyl acetate, andcentrifugally separating the catalyst to obtain the phenyl allyl ketone compound III. The molecular sieve catalyst provided by the invention is H-beta of which the silica-alumina ratios are respectively 14 and 29. The method is simple in reaction process, high in catalytic activity and selectivity, recyclable, environmentally friendly and capable of achieving large-scale industrial production.

Solvent free, light induced 1,2-bromine shift reaction of α-bromo ketones

Photolysis of α-bromopropiophenones in acetonitrile results in formation of β-bromopropiophenones with good product selectivity, which can be coined as 1,2-Br shift reaction. The product selectivity increases when the reaction is done in neat or solid state, where only the 1,2-Br shift product is formed in some cases. The reaction is suggested to proceed by C–Br bond homolysis to give a radical pair, followed by disproportionation and conjugate addition of HBr to the α,β-unsaturated ketone intermediate. When the unsaturated intermediate is stabilized by an extra conjugation, the reaction stops at the stage, in which the unsaturated ketone becomes a major product. The synthetic method described in this research fits in a category of eco-friendly organic synthesis nicely since the reaction does not use volatile organic solvents and any other additives such as acid, base or metal catalysts, etc. Besides, the method fits into perfect atom economy, which does not give any side products. The synthetic method should find much advantage over other alternative methods to obtain β-bromo carbonyl compounds.

A new class of bifunctional chiral phase transfer catalysts for highly enantioselective asymmetric epoxidation of α,β-unsaturated ketones at ambient temperature

A new type of bis-quaternary ammonium bromide as chiral multifunctional phase transfer catalysts derived from readily available inexpensive cinchona alkaloids has been developed and evaluated for the enantioselective asymmetric epoxidation of various chalcones in the presence of lower concentrations of various oxidants, bases, solvents and ambient temperature conditions. Under optimized reaction conditions, highest chemical yields of up to 98% along with the excellent enantioselectivities of about 99% were obtained by using the cinchona based chiral multifunctional phase transfer catalysts.

A novel transition metal-free conjugate reduction of α,β-unsaturated ketones with tosylhydrazine as a hydrogen source

A novel and efficient method has been developed for the chemoselective conjugate reduction of α,β-unsaturated ketones with tosylhydrazine as a hydrogen source to the corresponding saturated ketones in moderate to good yields. The present protocol does not require the use of transition metal, and is efficient being applicable to a wide range of substrates (25 examples).

PtI2-Catalyzed tandem 3,3-rearrangement/Nazarov reaction of arylpropargylic esters: Synthesis of indanone derivatives

An efficient PtI2-catalyzed tandem reaction of arylpropargylic esters, involving 3,3-rearrangement and Nazarov reaction, has been developed to produce 3-substituted and 3,3-disubstituted indanone derivatives. This approach provided a pathway to the synthesis of indanone skeletons in natural products.

Reaction of α-Halogeno Ketones with Carbonyl Compounds Promoted by CeI3, CeCl3-NaI,or CeCl3-SnCl2

Reaction of α-halogeno ketones with aldehydes in the presence of CeI3 in tetrahydrofuran is found to give α,β-unsaturated ketones in excellent yields under mild conditions.In contrast, treatment of α-halogeno ketones and carbonyl compounds with CeCl3-NaI or CeCl3-SnCl2 affords β-hydroxy ketones in good yields.It is assumed that these reactions proceed via cerium enolates.The combined reagents, however, cannot be applied to a Reformatsky-type reaction.Regiospecific and aldehyde chemoselective aldol synthesis are also described.

Carbon-Carbon Bond Formation between α-Halogenoketones and Aldehydes Promoted by Cerium(III) Iodide or Cerium(III) Chloride-Sodium Iodide

α-Halogenoketones react with aldehydes to form α,β-unsaturated ketones accompanied by dehalogenation in the presence of cerium(III) iodide, but the use of cerium(III) chloride-sodium iodide results in the formation of β-keto alcohols.