Imidazole-2-carboxaldehyde (IC) reactivity in the presence of halide anions (Cl~-, Br~-, I~-) has been studied by laser flash photolysis in aqueous solution at room temperature. The absorption spectrum of the triplet state of IC has been measured with a maximum absorption at 330 nm and ...
This enone is then reacted with a pyridine-2-carboxaldehyde under sodium cyanide catalysis to afford the 1,4-diketone which is condensed with ammonium acetate to afford the pyrrole. During the synthesis of the compounds of formula (I) labile functional groups in the intermediate compounds, e....
2-[(2,6-dichlorophenyl)imino]-3-[(6'-methyl-2'-pyridyl)methoxy]-1-imidazol idine carboxaldehyde 1'-oxide (a) From 2-([{2-[(2,6-dichlorophenyl)imino]-1-imidazolidinyl}oxy]methyl)-6-methyl-p yridine, formic acid and acetic acid anhydride there is obtained, in analogy to the details...
Imidazole-2-carboxaldehyde (IC) reactivity in thedoi:10.1016/J.CRCI.2014.03.008Liselotte TinelStéphane DumasChristian GeorgeElsevier MassonComptes Rendus ChimieTinel, L.; Dumas, S.; George, C. A Time-Resolved Study of the Multiphase Chemistry of Excited Carbonyls: Imidazole-2-Carboxalde- hyde and...
a) 2-N-Methylthiopyrimidine4-carboxaldehyde dimethyl acetal Pyruvic aldehyde dimethyl acetal (60 mL, 459 mmol) and N,N-dimethyl formamide dimethyl acetal (60 mL, 459 mmol) were stirred together at 100° for 18 h. The mixture was cooled. Methanol (300 mL), thiourea (69.6 g) and sodium...
The residue was stirred in ACN, filtered off and dried, yielding 170 g (83%) of 6,11-dihydro-11-[1-[2-[4-(2-quinolinylmethoxy)phenyl]ethyl]-4-piperidinylidene]-5H-imidazo[2,1-b][3]benzazepine-3-carboxaldehyde (compound 4, mp. 193.5° C.)....