13565-40-7

Upstream product

• 27465-66-3 4-bromocinnamoyl chloride 
• 5142-75-6 tri(p-tolyl)bismuth 
• 122-00-9 para-methylacetophenone 
• 2039-82-9 1-bromo-4-ethenyl-benzene 
• 7163-50-0 (4-methylphenyl)(oxo)acetic acid 
• 1122-91-4 4-bromo-benzaldehyde 
• 108-88-3 toluene 
• 766-97-2 4-n-methylphenylacetylene 

Downstream Products

• 1134911-01-5 5-(4-bromophenyl)-3-(4-methylphenyl)-2-oxaspiro[5.5]undec-3-en-1-one 
• 1429484-90-1 S-tert-butyl 4-(4-bromophenyl)-2-methyl-6-(4-tolyl)-1,4-dihydropyridine-3-carbothioate 
• 1191300-38-5 (E)-1-bromo-4-(3-(p-tolyl)prop-1-en-1-yl)benzene 
• 957828-81-8 [5-(4-bromophenyl)-3-(2-nitrophenyl)-4,5-dihydroisoxazol-4-yl](p-tolyl)methanone 

Relevant academic research and scientific papers

Catalyst- and acid-free Markovnikov hydration of alkynes in a sustainable H2O/ethyl lactate system

An efficient and sustainable protocol for the hydration of alkynes has been developed under metal/acid/catalyst/ligand-free conditions in a water/ethyl lactate mixture. The hydrogen-bond network in the ethyl lactate and water mixture plays a crucial and decisive role in activating the alkynes for hydration to afford the corresponding methyl ketones. This strategy gives the Markovnikov (ketone) addition product selectively over other possible products. The essential role of hydrogen bonding has been confirmed by experimental and theoretical techniques. A probable mechanism has been suggested by various control tests. The efficacy of the method has been further explored for the competent production of value-added α,β-unsaturated carbonyl compounds through the reaction of aldehydes with alkynes as ketonic surrogates. The environmentally benign hydration method takes place under mild conditions, has broad functional-group compatibility, and uses the ethyl lactate/water (1:3) medium as a “green alternative” in the absence of any hazardous, harmful, or expensive substances.

Flexible Construction of Functionalized-Pyrroles under Palladium or Copper Catalysis in the Presence of BF3 ? Et2O

We have developed a flexible approach enabling the access to highly functionalized pyrroles under palladium or copper catalysis in the presence of BF3 ? Et2O. This catalytic methodology utilizes commercially available amines as react

Design, synthesis, and SAR study of novel 4,5-dihydropyrazole-Thiazole derivatives with anti-inflammatory activities for the treatment of sepsis

Systemic inflammatory response syndrome is a major feature of sepsis which is one of the major causes of death worldwide. It has been reported that 3,5-diaryl-4,5-dihydropyrazole and thiazole derivatives have many biological functions, especially in the aspect of anti-inflammation. According to the strategy of pharmacophore combination, we introduced thiazole moiety into dihydropyrazole skeleton to design and synthesize a novel series of 2-(3,5-diphenyl-4,5-dihydro-1H-pyrazol-1-yl)-4-methylthiazole derivatives, and evaluated their anti-inflammatory activities for sepsis treatment. Preliminary structure?activity relationship (SAR) analysis was conducted by their inhibitory activities against nitric oxide (NO) release in LPS-induced RAW264.7 cells, and the optimal compound E26 exhibited more potent anti-inflammatory activity than the positive control treatment indomethacin and dexamethasone. In further mechanism study, our results showed that compound E26 significantly suppressed the production of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), NO and inhibited the expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2) through blocking MAPKs signaling pathway. In addition, in vivo administration of compound E26 resulted in a significant improvement of LPS-induced sepsis in C57BL/6J mice, with reducing toxicity in multiple organs. Taken together, this study demonstrated the compound E26 could be a promising agent for the treatment of sepsis.

Synthesis of 3-fluoro-2,5-disubstituted furans through ring expansion ofgem-difluorocyclopropyl ketones

The synthesis of 3-fluoro-2,5-disubstituted furans fromgem-difluorocyclopropyl ketones was accomplished using trifluoromethanesulfonic acid (CF3SO3H) through ring expansion owing to the activation of the carbonyl group in the starting material. The present synthesis of 3-fluorofurans tolerates substrates designed for products with aromatic substituents at the C-2 and C-5 positions.

An Easy Access to Oxime Ethers by Pd-Catalyzed C—O Cross-Coupling of Activated Aryl Bromides with Ketoximes and Chalcone Oximes

An efficient Pd-catalyzed method for C—O cross-coupling of ketoximes and chalcone oximes with activated aryl bromides and bromo-chalcones has been developed. All oxime ethers were obtained in good to excellent yields by [(π-allyl)PdCl]2/tBuXPhos (L7) catalyst system. TrixiePhos (L11) was also found to be effective for the oxime coupling. This method offers an easy and smooth coupling of chalcone oximes with activated aryl bromides and bromo-chalcones, which has not been previously explored.

Donor-acceptor fluorophores as efficient energy transfer photocatalysts for [2 + 2] photodimerization

Mild [2 + 2] photodimerization of enone substrates was induced by donor-acceptor fluorophores. Enone substrates were activated efficiently for anti-head to head dimerizations with a high yield (up to 83%) and high selectivity. The adjustable excited state potential also allows donor-acceptor fluorophores to be used for isomerization of the above substrates, confirming the potential of donor-acceptor fluorophores as energy transfer photocatalysts.

Synthesis, molecular docking and α-glucosidase inhibitory activity study of 2,4,6-triaryl pyrimidine derivatives

Background: α-Glucosidase inhibitors hinder the carbohydrate digestion and play an important role in the treatment of diabetes mellitus. α-glucosidase inhibitors available on the market are acarbose, miglitol, and voglibose. However, the use of acarbose is diminishing due to related side effects like diarrhea, bloating and abdominal distension. Objectives: This study aimed to synthesize 2,4,6-triaryl pyrimidines derivatives, screen their α-glucosidase inhibitory activity, perform kinetic and molecular docking studies. Methods: A series of 2,4,6-triaryl pyrimidine derivatives were synthesized and their α-glucosidase inhibitory activity was screened in vitro. Pyrimidine derivatives 4a-m were synthesized via a two-step reaction with a yield between 49 and 93%. The structure of the synthesized compounds was confirmed by different spectroscopic techniques (IR, NMR and MS). The in vitro α-glucosidase inhibition activities of the synthesized compounds 4a-m was also evaluated against Saccharomyces cerevisiae α-glucosidase. Results and Discussion: The majority of synthesized compounds had α-glucosidase inhibitory activity. Particularly compounds 4b and 4g were the most active compounds with an IC50 value of 125.2± 7.2 and 139.8 ± 8.1 μM respectively. The kinetic study performed for the most active compound 4b revealed that the compound was a competitive inhibitor of Saccharomyces cerevisiae α-glucosidase with Ki of 122 μM. The molecular docking study also revealed that the two compounds have important binding interactions with the enzyme active site. Conclusion: 2,4,6-triarylpyrimidine derivative 4a-m were synthesized and screened for α-glucosidase inhibitory activity. Most of the synthesized compounds possess α-glucosidase inhibitory activity, and compound 4b demonstrated the most significant inhibitory action as compared to acarbose.

Synthesis of stable benzimidazole derivatives bearing pyrazole as anticancer and EGFR receptor inhibitors

A new series of benzimidazole linked pyrazole derivatives were synthesized by cyclocondensation reaction through one-pot multicomponent reaction in absolute ethanol. All the synthesized compounds were tested for their in vitro anticancer activities on fiv

Silver-catalyzed decarboxylative cross-coupling of α-keto acids with alkenes giving approach to chalcones

A silver-catalyzed decarboxylative cross-coupling of α-keto acids with alkenes is reported. The method, with a wide range of substrate tolerance and mild operational conditions, can produce various chalcone derivatives in moderate to high yields from easily available starting materials.

Domino-Fluorination-Protodefluorination Enables Decarboxylative Cross-Coupling of α-Oxocarboxylic Acids with Styrene via Photoredox Catalysis

Domino-fluorination-protodefluorination decarboxylative cross-coupling of α-keto acids with styrene has been developed via photoredox catalysis. The critical part of this strategy is the formation of the carbon-fluorine (C-F) bond by the capture of a carbon-centered radical intermediate, which will overcome side reactions during the styrene radical functionalization process. Experimental studies have provided evidence indicating a domino-fluorination-protodefluorination pathway with α-keto acid initiating the photoredox cycle. The present catalytic protocol also affords a novel approach for the construction of α,β-unsaturated ketones under mild conditions.