80331-24-4

Upstream product

• 624-31-7 4-tolyl iodide 
• 122-57-6 1-Phenylbut-1-en-3-one 
• 539-43-5 4-methylphenylmercuric chloride 
• 33604-67-0 (4-methylphenyl)azo 4-methylphenyl sulfone 
• 1896-62-4 (E)-benzalacetone 
• 87856-09-5 dichloro(4-methylphenyl)stibine 
• 6746-22-1 tetra(p-tolyl)tin 
• 5720-05-8 4-methylphenylboronic acid 
• 5084-80-0 tri(4-tolyl)boroxine 
• 824-79-3 sodium 4-methylbenzenesulfinate 
• 104-87-0 4-methyl-benzaldehyde 
• 67-64-1 acetone 
• 98-80-6 phenylboronic acid 
• 100-52-7 benzaldehyde 

Relevant academic research and scientific papers

Hydrotalcite-supported palladium nanoparticles as catalysts for the hydroarylation of carbon-carbon multiple bonds

Palladium nanoparticles supported on Mg/Ca hydrotalcites catalyze the hydroarylation reaction of different alkynes and alkenes with aryl iodides under air in MeCN. The reaction of tertiary propargylic alcohols (1) with aryl iodides (2) yields, stereoselectively, γ,γ-diarylallylic alcohols (3) in moderate to high yields and high selectivity. Also, the HT/Pd hydroarylation reaction with aryl iodides was attempted on norbornene and α,β-unsaturated ketones affording, respectively, exo-aryl bicyclo[2.2.1]heptanes and β-aryl ketones in moderate to high yields. All the reactions described benefit from using a heterogeneous catalyst with evident advantages in terms of reaction purification and recyclability of the catalyst.

Enantioselective Conjugate Addition of Stabilized Arylzinc Iodide to Enones: an Improved Protocol of the Hayashi Reaction

Stabilised arylzinc iodide, prepared by direct insertion of zinc into aryl iodides, were used as nucleophiles in the Hayashi Rh-catalysed enantioselective conjugate addition to enones. The reaction conditions were optimized in the addition of phenylzinc i

Photocatalytic Hydroacylation of Alkenes by Directly Using Acyl Oximes

Acyl oximes are directly used as the acyl radical precursors in the hydroacylation reactions for the first time. In this work, acyl radicals can be effectively generated via β-scission of a phosphoranyl radical under photocatalytic conditions. As a result, the hydroacylation of alkenes triggered by the resulting acyl radicals leads to facile syntheses of a range of valuable ketones.

Ligand-free palladium-catalyzed tandem pathways for the synthesis of 4,4-diarylbutanones and 4,4-diaryl-3-butenones under microwave conditions

Two efficient Pd-catalyzed tandem pathways for the synthesis of 4,4-diaryl-2-butanones and 4,4-diaryl-3-buten-2-ones were elaborated. The first step in both procedures was the Heck coupling of methyl vinyl ketone (MVK) and various aryl iodides leading to 4-aryl-3-buten-2-one with the yield of up to 92% in 1?hr. The second step performed with the same catalyst and a new portion of aryl iodide in the presence K2CO3 as a base produced 4,4-diaryl-3-buten-2-ones in high yield. Reaction selectivity changed completely to saturated 4,4-diaryl-2-butanones, reductive Heck products, when a tertiary amine was used instead of K2CO3. Due to the application of microwave irradiation (MW), the desired products were obtained in high yield in a short time (4?hr), using 0.5?mol% of the Pd (OAc)2 catalyst without additional ligands.

Palladium-catalyzed site-selective arylation of aliphatic ketones enabled by a transient ligand

Transition metal-catalyzed direct C-H bond functionalization enabled by transient ligands has become an attractive topic. Here we report a palladium-catalyzed site-selective arylation of β-C(sp3)-H bonds in aliphatic ketones with β-alanine as the transient ligand.

Desulfitative Pd-catalysed coupling reaction using benzenesulfonyl chlorides and enones as the coupling partners

The reaction of benzenesulfonyl chlorides with enones was investigated. β-Ionone and benzalacetone in the presence of a palladium catalyst were found to afford the conjugate addition products instead of the expected Heck type products. The reaction tolerates a wide variety of substituents on the benzenesulfonyl chloride. It should be noted that no cleavage of the C-Br and C-I bonds was observed in the course of the reactions with 4-bromo- or 4-iodo-benzenesulfonyl chlorides, allowing further transformations. For example, using 4-bromobenzenesulfonyl chloride as the central unit, consecutive conjugate addition following arylations allowed access to substituted bi(hetero)aryls.

Palladium(II) Acetate Catalyzed Reductive Heck Reaction of Enones; A Practical Approach

A surprisingly practical Pd(OAc)2 or Pd(TFA)2-catalyzed reductive Heck reaction between aryl iodides and α,β-unsaturated ketones is described using N,N-diisopropylethylamine (DIPEA, Hünigs base) as the reductant. In general, 1 mol % of Pd(OAc)2 is sufficient to afford good yields using electron-rich or halogen-substituted aryl iodides. Electron-deficient aryl iodides preferentially give homocoupling. Enones containing aryl or bulky substituents on the β-carbon react smoothly, producing mainly reductive Heck product, whereas enones with alkyl substituents on the β-carbon afford a mixture of reductive Heck and Heck product. Deuterium labeling experiments show that the reaction is a bona fide reductive Heck reaction and exclude a Heck reaction-conjugate reduction cascade. Deeply DIPEA about... A palladium-catalyzed reductive Heck reaction of aryl iodides to α,β-unsaturated ketones is described using N,N diisopropylethylamine (DIPEA, Hünigs base) as the reductant. A deuterium labeling study shows that the reaction is a bona fide reductive Heck reaction and excludes a Heck reaction-conjugate reduction cascade.

Palladium-catalyzed conjugate addition of arylsulfonyl hydrazides to α,β-unsaturated ketones

A palladium-catalyzed desulfitative-denitrogenative conjugate addition of arylsulfonyl hydrazides to α,β-unsaturated ketones is described. The reaction showed very good selectivity and tolerated a wide range of functionalities under an atmosphere of oxygen with or without the aid of a metal co-oxidant. The Royal Society of Chemistry 2013.

Tandem aldol condensation/platinacycle-catalyzed addition reactions of aldehydes, methyl ketones, and arylboronic acids

Aldol condensation of aldehydes with methyl ketones followed by anionic four-electron donor-based (type I) platinacycle-catalyzed addition reactions of arylboronic acids to form β-arylated ketones is described. Good to excellent yields of β-arylated ketones were obtained for the tandem reactions of aromatic/aliphatic aldehydes, methyl ketones, and arylboronic acids, and moderate yields were observed for the tandem reactions of α,β-unsaturated aldehydes. The aldol condensation of aldehydes with methyl ketones was successfully combined with the platinacycle-catalyzed addition reactions of arylboronic acids in a tandem fashion. A variety of β-arylated ketones was obtained in good to excellent yields.

Palladium-catalyzed desulfitative addition of sodium sulfinates with α,β-unsaturated carbonyl compounds

A palladium-catalyzed desulfitative conjugate addition of sodium sulfinates with α,β-unsaturated carbonyl compounds is described. The reaction showed very good selectivity and tolerated a wide range of functionalities under an atmosphere of argon.