24638-83-3

Upstream product

• 699-08-1 1-ethoxy-4-iodobenzene 
• 155857-33-3 1--1-phenylethene 
• 5459-40-5 4-ethoxystyrene 
• 98-80-6 phenylboronic acid 
• 1080-32-6 O,O-diethyl benzylphosphonate 
• 10031-82-0 4-ethoxybenzaldehyde 
• 100-42-5 styrene 
• 588-96-5 4-bromoethoxybenzene 
• 67416-43-7 1--1-phenylethene 
• 67300-99-6 1-phenylethenylmagnesium bromide 
• 540-38-5 p-Iodophenol 

Relevant academic research and scientific papers

The aromatic production of olefins

PROBLEM TO BE SOLVED: To provide a method for efficiently producing aromatic olefins useful for various functional chemicals.SOLUTION: Aromatic olefins are produced by reaction of an aromatic compound with an epoxide or aldehyde in the presence of a solid

THERAPEUTIC AGENTS FOR SKIN DISEASES AND CONDITIONS

The present invention relates to method(s) of treating a subject afflicted with a skin disease or condition, the method comprising administering to the subject or patient in need a composition comprising a therapeutically effective amount of a substituted cis or trans- stilbene or a stilbene hybrid. A method of treating or reducing the likelihood of a skin disease or condition in a patient is an additional embodiment of the present invention. Preferred pharmaceutical compositions of the invention include nanoemulsions comprising a therapeutically effective amount of a substituted cis or trans-stilbene or stilbene hybrid and at least one antibiotic.

Mizoroki-Heck cross-couplings of 2-acetyl-5-bromobenzofuran and aryl halides under microwave irradiation

Mizoroki-Heck cross-coupling reactions of 2-acetyl-5-bromobenzofuran as well as activated and deactivated aryl bromides with various olefins were investigated under both thermal as well as microwave irradiating conditions in open air using water solvent.

Substituted CIS- and trans-stilbenes as therapeutic agents

The present invention relates to method(s) of treating a subject afflicted with cancer or a precancerous condition, an inflammatory disease or condition, and/or stroke or other ischemic disease or condition, the method comprising administering to the subject or patient in need a composition comprising a therapeutically effective amount of a substituted cis or trans-stilbene.

Substituted trans-stilbenes, including analogues of the natural product resveratrol, inhibit the human tumor necrosis factor alpha-induced activation of transcription factor nuclear factor kappaB

The transcription factor nuclear factor kappaB (NF-κB), which regulates expression of numerous antiinflammatory genes as well as genes that promote development of the prosurvival, antiapoptotic state is up-regulated in many cancer cells. The natural product resveratrol, a polyphenolic trans-stilbene, has numerous biological activities and is a known inhibitor of activation of NF-κB, which may account for some of its biological activities. Resveratrol exhibits activity against a wide variety of cancer cells and has demonstrated activity as a cancer chemopreventive against all stages, i.e., initiation, promotion, and progression. The biological activities of resveratrol are often ascribed to its antioxidant activity. Both antioxidant activity and biological activities of analogues of resveratrol depend upon the number and location of the hydroxy groups. In the present study, phenolic analogues of resveratrol and a series of substituted trans-stilbenes without hydroxy groups were compared with resveratrol for their abilities to inhibit the human tumor necrosis factor alpha-induced (TNF-α) activation of NF-κB, using the Panomics NF-κB stable reporter cell line 293/NF-κB-luc. A series of 75 compounds was screened to identify substituted trans-stilbenes that were more active than resveratrol. Dose-response studies of the most active compounds were carried out to obtain IC50 values. Numerous compounds were identified that were more active than resveratrol, including compounds that were devoid of hydroxy groups and were 100-fold more potent than resveratrol. The substituted trans-stilbenes that were potent inhibitors of the activation of NFκB generally did not exhibit antioxidant activity. The results from screening were confirmed using BV-2 microglial cells where resveratrol and analogues were shown to inhibit LPS-induced COX-2 expression.

The first ligand-modulated oxidative Heck vinylation. Efficient catalysis with molecular oxygen as palladium(0) oxidant

The discovery of the first ligand-supported Pd(II) catalysed oxidative Heck reaction with molecular oxygen as reoxidant and the scope with diverse arylboronic acids and olefins using only 1-2% of catalyst are reported.

On the regioselectivity of palladium catalyzed cross-coupling reactions of alkenylsilanes: participation of β-cationic organosilicate-palladium species during the transmetallation

The cross-coupling reaction promoted by a palladium catalyst and fluoride salt of 1--1-phenylethene (1) with substituted aryl iodides gave the unexpected cine-substitution products (E)-1-aryl-2-phenylethenes (3) along with the normal ipso-substitution product 1-aryl-1-phenylethene (2).The product ratios were strongly dependent on the electronic nature of the substituent on aryl iodides: ipso-substitution products (2) were favoured by an electron-withdrawing substituent, and cine-substitution products (3) by an electron-donating substituent.On the basis of these observations, the following mechanism of transmetallation of alkenyl(fluoro)silicates with arylpalladium is proposed: electrophilic attack of an arylpalladium complex on the olefinic α-carbon of an alkenyl(fluoro)silicate produces a β-cationic organosilicate-palladium species which then transfers the alkenyl group from silicon to the palladium complex. Key words: Silane; Palladium; Transmetallation; Regioselectivity