79159-65-2Relevant articles and documents
One pot synthesis of low cost emitters with large Stokes' shift
Volpi,Magnano,Benesperi,Saccone,Priola,Gianotti,Milanesio,Conterosito,Barolo,Viscardi
, p. 152 - 164 (2017)
A series of 1,3-diarylated imidazo[1,5-a]pyridine derivatives were synthesized in high yields by a one-pot, three components, condensation of phenyl(pyridin-2-yl)methanone with several aldehydes in the presence of ammonium acetate. These compounds were characterized by spectroscopic and crystallographic techniques and their optical properties were discussed in relation to their chemical structures. Absorption and fluorescence spectra generally show two absorption maxima around 310 nm and 350 nm and an emission maximum between 460 and 550 nm with a remarkable Stokes' shift range of 90–166 nm. Moreover, depending on the chemical structure of the substituent in position 3, we were able to tune the quantum yields (Φ) in solution from 6.4% to 38.5%. Finally, the 1-phenylimidazo[1,5-a]pyridine substituted with a 3-(2-methoxyphenyl) group (large Stokes' shift, high Φ) was dispersed in a transparent thermosetting polyurethane resin giving a luminescent low cost material.
Mg3N2-assisted one-pot synthesis of 1,3-disubstituted imidazo[1,5-: A] pyridine
Jadhav, Jagannath S.,Patil, Suhas G.,Sankpal, Sagar T.
, p. 11808 - 11815 (2020/04/10)
A novel Mg3N2-assisted one-pot annulation strategy has been developed via cyclo-condensation reaction of 2-pyridyl ketones with alkyl glyoxylates or aldehydes, allowing the formation of imidazo[1,5-a]pyridines exclusively with an exellent yield.
Heterogeneous copper-catalyzed decarboxylative cyclization of 2-benzoylpyridines with α-amino acids leading to imidazo[1,5-a]pyridines
Liao, Yang,Yan, Chenyu,Zhang, Rongli,Cai, Mingzhong
, p. 1 - 12 (2018/12/11)
The heterogeneous decarboxylative cyclization reaction between 2-benzoylpyridines and α-amino acids was achieved in toluene at 120 °C in the presence of 15 mol% of L-proline-functionalized MCM-41-supported copper(II) complex [L-Proline-MCM-41-Cu(OTf)
A Cu(II) metal-organic framework with significant H2 and CO2 storage capacity and heterogeneous catalysis for the aerobic oxidative amination of C(sp3)-H bonds and Biginelli reactions
Gupta, Anoop K.,De, Dinesh,Tomar, Kapil,Bharadwaj, Parimal K.
, p. 1624 - 1634 (2018/02/09)
A Cu(ii) metal-organic framework, {[Cu2(L)(H2O)2]·(5DMF)(4H2O)}n (1), has been synthesized using an angular tetracarboxylic acid ligand (H4L) incorporating both trifluoromethyl (-CF3/
