1208-88-4Relevant articles and documents
BODIPY-Based Photoacid Generators for Light-Induced Cationic Polymerization
Sambath, Karthik,Wan, Zhaoxiong,Wang, Qi,Chen, Hao,Zhang, Yuanwei
, p. 1208 - 1212 (2020)
Photoacid generators (PAGs) are organic compounds that can generate protons (H+) upon irradiation with certain wavelengths of light. In this work, we designed and synthesized the first BODIPY-based PAGs with D-A and D-?-A conjugation structures and achieved green and red LED light-induced acid generation. By the use of red-light absorbance, red-LED-triggered cationic polymerization was demonstrated as a proof-of-concept application of these PAGs.
Nucleophilic aromatic substitution reaction of nitroarenes with alkyl- or arylthio groups in dimethyl sulfoxide by means of cesium carbonate
Kondoh, Azusa,Yorimitsu, Hideki,Oshima, Koichiro
, p. 2357 - 2360 (2006)
Treatment of nitroarenes having electron-withdrawing groups at the ortho or para position with alkanethiol in the presence of cesium carbonate in dimethyl sulfoxide at 25°C leads to nucleophilic displacement of the nitro group with the alkylthio group. Cesium carbonate is superior to other bases such as potassium carbonate, sodium carbonate, and triethylamine. The cesium-mediated nucleophilic aromatic substitution reaction provides a mild yet powerful and user-friendly protocol for the synthesis of aryl sulfides.
Chan-Lam-Type C-S Coupling Reaction by Sodium Aryl Sulfinates and Organoboron Compounds
Lam, Long Yin,Ma, Cong
supporting information, p. 6164 - 6168 (2021/08/16)
A Chan-Lam-Type C-S coupling reaction using sodium aryl sulfinates has been developed to provide diaryl thioethers in up to 92% yields in the presence of a copper catalyst and potassium sulfite. Both electron-rich and electron-poor sodium aryl sulfinates and diverse organoboron compounds were tolerated for the synthesis of aryl and heteroaryl thioethers and dithioethers. The mechanistic study suggested that potassium sulfite was involved in the deoxygenation of sulfinate through a radical process.
Synthesis and biological evaluation of new 1,2,4-triazolo[1,5-a] pyridine and 1,2,4-triazolo[1,5-a] isoquinolinederivatives bearing diphenyl sulfide moiety as antimicrobial agents
El-Adasy, Abu-Bakr A.,El-Haleem Hussein, Abd M.,Ishak, Esam A.,Hafiz, Ibrahim S.A.,Gawish, Emad H.,Elapasery, Morsy A.,El-Gaby, Mohamed S.A.
, p. 913 - 921 (2021/02/12)
Hydrazone derivative (3) was used as a precursor for the synthesis of novel [1,2,4]triazolo[1,5-a]pyridine derivatives via its reaction with some electrophilic reagents. Treatment of hydrazone derivative (3) with arylidenemalononitriles(4) in the presence of piperidine afforded the 1,2,4-triazolo[1,5-a]pyridine derivatives (7a-d). Ternary condensation of hydrazone (3), aliphatic aldehyde and malononitrile (1:1:1 molar ratio) in the presence of a basic catalyst furnished the novel 1,2,4-triazolo[1,5-a]pyridine derivatives (8a,b). Similarly, cyclization of hydrazone (3) with ethyl α-cyanocinnamates (9) (1:1 molar ratio) yields the corresponding 1,2,4-triazolo[1,5-a]pyridines (10a-c). The hydrazone (3) can be cyclized with appropriate arylazomalononitriles(11) to afford the corresponding 1,2,4-triazolo[1,5-a]pyridines (14a,b). The behavior of fused thiophene derivative (15) towards electron-poor olefins was investigated. It is has been found that, 1,2,4-triazolo[1,5-a]isoquinoline derivative (17) was obtained by treatment of thiophene derivative (15) with dimethyl acetylenedicarboxylate (DMAD). Condensation of compound (15) with N-phenylmalemide furnished pyrrolotriazoloisoquinoline derivative (18). Also, the triazoloisoquinoline derivative (19) was obtained by condensation of compound (15) with chalcone. All the newly synthesized compounds were characterized by analytical and spectral data and evaluated for their antibacterial and antifungal activities in vitro against two Gram-positive bacteria, two Gram negative bacteria as well as two fungi. In general, the newly synthesized compounds showed good antimicrobial activities.
