35556-57-1

Upstream product

• 144017-77-6 1-(2-chloro-phenyl)-3-phenyl-2-propen-1-one 
• 100-52-7 benzaldehyde 
• 2142-68-9 1-(2-chlorophenyl)ethanone 
• 100-42-5 styrene 
• 89-98-5 2-chloro-benzaldehyde 
• 144017-77-6 (E)-1-(2-chlorophenyl)-3-phenylprop-2-en-1-one 

Downstream Products

• 37542-14-6 aurone 
• 1431527-10-4 C₁₅H₁₂Cl₂O₂ 
• 1431526-96-3 C₂₄H₁₈Cl₂O₃ 
• 1431526-78-1 3-chloro-1-(o-chlorophenyl)-3-phenylpropane-1,2-dione 

Relevant academic research and scientific papers

Asymmetric epoxidation of α,β-unsaturated ketones via an amine-thiourea dual activation catalysis

A simple asymmetric epoxidation method is developed to effectively synthesize chiral α-carbonyl epoxides through an amine-thiourea dual activation catalysis. In this method, TBHP, as an oxidant, determined the reaction rate, and the chiral amine-thiourea catalyst effectively controlled the stereoselectivity of the reaction, and KOH promoted deprotonation. 22 examples of α,β-unsaturated ketones with various substituent groups are smoothly converted into α-carbonyl epoxides with moderate to excellent enantiomeric excess.

Method for preparing epoxide by one-pot olefin aerobic epoxidation

The invention relates to a method for preparing an epoxide by one-pot olefin aerobic epoxidation, and belongs to the technical field of organic synthesis. An olefin, an alkyl aromatic compound and analkali are added into a solvent, or an olefin, an alkyl aromatic compound and an alkali are directly mixed; the temperature is raised to 70-160 DEG C in an air or oxygen atmosphere; reacting is carried out for 1-48 hours; and the olefin is directly oxidized into the corresponding epoxide in the presence of the alkyl aromatic compound, the alkali and air (or oxygen), wherein the yield is up to 99%.In the reaction process, the generated alkyl peroxide is generated in situ and consumed in situ, so that the concentration of the alkyl peroxide is kept at a lower level; and generated alkyl peroxy free radicals can also react with the olefin to further generate the peroxide, and efficiency is improved. The method has the advantages of simple operation, mild conditions, low raw material cost andno need of special complex equipment, and has a good industrial application prospect.

Visible Light-Induced Aerobic Epoxidation of α,β-Unsaturated Ketones Mediated by Amidines

An aerobic photoepoxidation of α,β-unsaturated ketones driven by visible light in the presence of tetramethylguanidine (3b), tetraphenylporphine (H2TPP), and molecular oxygen under mild conditions was revealed. The corresponding α,β-epoxy ketones were obtained in yields of up to 94% in 96 h. The reaction time was shortened to 4.6 h by flow synthesis. The mechanism related to singlet oxygen was supported by experiments and density functional theory (DFT) calculations.

Visible-Light-Driven Epoxyacylation and Hydroacylation of Olefins Using Methylene Blue/Persulfate System in Water

A visible-light-driven strategy for hydroacylation and epoxyacylation of olefins in water using methylene blue as photoredox catalyst and persulfate as oxidant is reported. In this unprecedented unified approach, two different transformations are accomplished using only one set of reagents. The method has a broad scope spanning a range of aromatic and aliphatic aldehydes as well as conjugated and nonconjugated olefins to deliver ketones and epoxyketones from abundant and inexpensive chemical feedstocks.

Method for preparing epoxide through induction of visible light

The invention belongs to the technical field of organic synthesis and provides a method for preparing an epoxide through induction of visible light. The method comprises the following step: under thecondition that the visible light and a photosensitizer exist, by taking oxygen or air as an oxygen source or an oxidizing agent and taking a synthesized amidine derivative as a catalyst, performing areaction at the temperature of -40-50 DEG C for 36h-192h, so that olefin is directly oxidized into the corresponding epoxide. The method is mild in reaction conditions, and the yield is as high as 94%or above, therefore, the method has good development value and application prospect.

Copper-catalyzed intramolecular tandem reaction of (2-halogenphenyl)(3- phenyloxiran-2-yl)methanones: Synthesis of (Z)-aurones

A convenient and efficient method for the copper-catalyzed synthesis of (Z)-aurones via intramolecular tandem reaction of (2-halogenphenyl)(3- phenyloxiran-2-yl)methanones is reported. Moreover, a plausible mechanism for the formation of (Z)-aurones is proposed. This is the first report on the synthesis of (Z)-aurones through copper-catalyzed Ullmann coupling reaction employing epoxides as substrates.

Facile epoxidation of α,β-unsaturated ketones with cyclohexylidenebishydroperoxide

Cyclohexylidenebishydroperoxide was successfully used as the oxygen source for the oxidation of α,β-unsaturated ketones for the first time. The corresponding epoxides were obtained in excellent yields under the Weitz-Scheffer reaction conditions.