177756-62-6Relevant articles and documents
Ligandless Palladium-Catalyzed Reductive Carbonylation of Aryl Iodides under Ambient Conditions
Han, Wei,Liu, Binbin,Chen, Junjie,Zhou, Qing
supporting information, p. 835 - 840 (2017/04/06)
Ligandless palladium-catalyzed reductive carbonylation of aryl iodides for the synthesis of aromatic aldehydes has been developed. This carbonylation process proceeded effectively even under ambient temperature and pressure. In addition, this method enables successive reductive carbonylation of diiodobenzenes to furnish dialdehydes in satisfactory yields. Finally, the nature of the active catalytic species is discussed.
Elemental fluorine. Part 21. (1) direct fluorination of benzaldehyde derivatives
Chambers, Richard D.,Sandford, Graham,Trmcic, Jelena,Okazoe, Takashi
, p. 339 - 344 (2013/01/03)
Direct fluorination of a range of benzaldehyde derivatives gives mixtures of fluorobenzaldehyde and benzoyl fluoride products in ratios that depend upon the nature of the ring substituent Electron-withdrawing substituents give predominantly benzoyl fluoride derivatives, whereas electron-donating substituents lead to fluoroarene systems. Separation of ring-fluorinated products can be easily accomplished by esterification of the benzoyl fluoride side products. Scale-up of these processes to provide significant quantities of appropriate fluorobenzaldehyde systems has also been achieved using continuous flow techniques.
Method for producing halogen-substituted aromatic aldehyde
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Page/Page column 5-6, (2008/06/13)
In the production method of the invention, a halogen-substituted aromatic compound is reacted with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride into a corresponding halogen-substituted aromatic aldehyde. By the use of hydrogen fluoride and boron trifluoride, the para position to halogen atom is selectively formylated to provide the halogen-substituted aromatic aldehyde in high yields in a short reaction time even at temperatures lower than room temperature.
Elemental fluorine Part 12. Fluorination of 1,4-disubstituted aromatic compounds
Chambers, Richard D.,Hutchinson, John,Sparrowhawk, Matthew E.,Sandford, Graham,Moilliet, John S.,Thomson, Julie
, p. 169 - 173 (2007/10/03)
Direct fluorination of a series of 1,4-disubstituted benzene derivatives in acid reaction media at convenient temperature leads, in many cases, to selectively fluorinated aromatic products in preparatively useful conversions and yields.
1,2-Diarylimidazoles as potent, cyclooxygenase-2 selective, and orally active antiinflammatory agents
Khanna, Ish K.,Weier, Richard M.,Yu, Yi,Xu, Xiang D.,Koszyk, Francis J.,Collins, Paul W.,Koboldt, Carol M.,Veenhuizen, Amy W.,Perkins, William E.,Casier, Jacquelen J.,Masferrer, Jaime L.,Zhang, Yan Y.,Gregory, Susan A.,Seibert, Karen,Isakson, Peter C.
, p. 1634 - 1647 (2007/10/03)
Series of 1,2-diarylimidazoles has been synthesized and found to contain highly potent and selective inhibitors of the human COX-2 enzyme. The paper describes a short synthesis of the target 1,2-diarylimidazoles starting with aryl nitriles. Different portions of the diarylimidazole (I) were modified to establish SAR. Systematic variations of the substituents in the aryl ring B have yielded very potent (IC50 = 10-100 nm) and selective (1000-12500) inhibitors of the COX-2 enzyme. The study on the influence of substituents in the imidazole ring established that a CF3 group at position 4 gives the optimum oral activity. A number of the diarylimidazoles showed excellent inhibition in the adjuvant induced arthritis model (e.g., ED50 = 0.02 mpk for 22 and 34). The diarylimidazoles are also potent inhibitors of carrageenan-induced edema (ED50 = 9-30 mpk) and hyperalgesia (ED50 = 11- 40 mpk). Several orally active diarylimidazoles show no GI toxicity in the rat and mouse up to 200 mpk.
