66483-40-7

Upstream product

• 14111-33-2 diethyl 2-(4-methylbenzylidene)malonate 
• 151-50-8 potassium cyanide 
• 109971-38-2 C₁₉H₂₇N₃O₄ 
• 622-97-9 1-ethenyl-4-methylbenzene 
• 124-38-9 carbon dioxide 
• 18300-87-3 ethyl 2-cyano-3-p-tolylacrylate 
• 104-87-0 4-methyl-benzaldehyde 
• 766-97-2 4-n-methylphenylacetylene 

Downstream Products

• 34319-19-2 N-methyl-2-p-tolylsuccinimide 

Relevant academic research and scientific papers

Method for synthesizing succinic acid compounds

The invention provides a method for synthesizing succinic acid compounds. The method specifically comprises the following steps: adding a substrate, a photocatalyst and an alkali into a reaction tube,adding a reducing agent and a solvent under the atmosphere of CO2, conducting reacting under the irradiation of visible light, carrying out quenching treatment after the raw materials react completely, and then conducting separating and purifying to obtain a dicarboxylated product of olefin, namely a succinic acid compound. The photocatalyst is 4CzIPN or Ir[(ppy)2(dtbppy)]PF6 and the like, and the reaction substrate comprises 1,1-diaryl ethylene, a monoaryl substituted olefin compound, an acrylate compound and allene. According to the scheme provided by the invention, the reaction conditionsare mild, the applicability of the reaction substrate is wide, and the yield is basically not influenced under the condition that the reaction substrate is amplified to the gram scale; and meanwhile,the invention overcomes the defects of high toxicity of reagents and harsh reaction conditions in the prior art, and has a good industrial application prospect.

Direct β-Selective Hydrocarboxylation of Styrenes with CO2 Enabled by Continuous Flow Photoredox Catalysis

The direct β-selective hydrocarboxylation of styrenes under atmospheric pressure of CO2 has been developed using photoredox catalysis in continuous flow. The scope of this methodology was demonstrated with a range of functionalized terminal styrenes, as well as α-substituted and β-substituted styrenes.

Discovery, stereospecific characterization and peripheral modification of 1-(pyrrolidin-1-ylmethyl)-2-[(6-chloro-3-oxo-indan)-formyl]-1,2,3,4-tetrahydroisoquinolines as novel selective κ opioid receptor agonists

A novel series of 1-(pyrrolidin-1-ylmethyl)-2-[(3-oxo-indan)-formyl]-1,2,3,4-tetrahydroisoquinoline derivatives maj-3a-maj-3u were synthesized and evaluated in vitro for their binding affinity at κ-opioid receptors. Maj-3c displayed the highest affinity for κ-opioid receptors (Ki = 0.033 nM) among all the compounds evaluated. Furthermore, all four stereoisomers of compound 3c were prepared, and (1S,18S)-3c was identified as the most potent (Ki = 0.0059 nM) κ-opioid receptor agonist among the four stereoisomers. Maj-3c produced significant antinociception (ED50 = 0.000406 mg kg-1) compared to U-50,488H and original BRL 52580 in the acetic acid writhing assay, but its strong sedative effect (ED50 = 0.000568 mg kg-1) observed in the mouse rotation test reduced its druggability. To minimize the central nervous system side effects, a series of hydroxyl-containing analogs of maj-3c were synthesized, and maj-11a was found to be a potent κ-opioid receptor agonist (Ki = 35.13 nM). More importantly, the dose for the sedative effect (ED50 = 9.29 mg kg-1) of maj-11a was significantly higher than its analgesic dose (ED50 = 0.392 mg kg-1), which made it a promising peripheral analgesic candidate compound with weak sedative side effects.

Efficient electrochemical dicarboxylations of arylacetylenes with carbon dioxide using nickel as the cathode

The electrochemical dicarboxylation of arylacetylenes with carbon dioxide could be smoothly achieved in an undivided cell using Ni as the cathode and Al as the anode with n-Bu4NBr-DMF as the supporting electrolyte, at a constant current under CO2 pressure of 3 MPa and room temperature in the absence of additional catalysts. The corresponding aryl-maleic anhydrides and 2-arylsuccinic acids were afforded in excellent total yields (82-94%). Under anhydrous conditions, an unsaturated aryl-maleic anhydride as the main product was obtained, while the presence of H2O would lead to the formation of saturated 2-arylsuccinic acids. The results of cyclic voltammetric experiments show that a nickel cathode itself plays the catalytic role in the reduction reaction of arylacetylenes with CO2.

Synthesis of 3-aryl thiophenes from disodium 2-aryl succinates: Role of red phosphorus

Role played by red phosphorus in the synthesis of 3-aryl thiophenes from disodium 2-aryl succinates using P4S10 discussed. A new simple method for the synthesis of 2-(4-methylphenyl)succinic acid is also described.

Enamines; 45. A New Simple Synthesis of 2-Phenylsuccinic Acids

A simple route to 2-phenylsuccinic acids consists of the reaction of 1,1-dimorpholinoethene with β-nitrostyrenes at room temperature and hydrolysis of the 1:1 adduct thus obtained with hydrochloric acid.The method affords good overall yields of 2-phenylsuccinic acids.