Cov khoom

Cov tshuaj tiv thaiv ntawm 3-phenylaminocyclopent-2-en-1-ib nrog 4-methyl, 4-methoxy thiab 4-chlorobenzenediazonium tetrafluoroborates tau siv los npaj cov khoom azo coupling 3a-c.Nws tau pom tias cov tebchaw no muaj nyob rau hauv ob qho tib si CDCl (3) tov thiab cov theem khoom siv tshwj xeeb xws li (E)-3-phenylamino-2-(4-subst.phenyldiazenyl)cyclopent-2-en-1-ones nrog N- -H...N intramolecular hydrogen bond.Kev hloov pauv ntawm phenyl residue ntawm diazonium ntsev tsis cuam tshuam rau txoj haujlwm ntawm tautomeric equilibrium.Ntawm qhov tod tes, cov tebchaw 4a, b tsim los ntawm cov tshuaj tiv thaiv ntawm 3-phenylamino-1H-inden-1-ib nrog 4-methylbenzene- los yog benzenediazonium tetrafluoroborates muaj nyob rau hauv CDCl (3) tov thiab nyob rau hauv cov khoom theem li hydrazone tebchaw.Nyob rau hauv cov kev daws lawv tshwm sim raws li ib tug sib tov ntawm peb daim ntawv, tawm ntawm uas ob tau txheeb xyuas raws li E / Z isomers nrog ntau hom hydrogen bonds.Compound 5 tsim los ntawm cov tshuaj tiv thaiv ntawm 3-amino-5,5-dimethylcyclohex-2-en-1-one nrog 4-methoxybenzenediazonium tet rafluoroborate yog hloov mus rau hauv ib qho ruaj khov hydrochloride 5.HCl ntawm sawv hauv CHCl (3) tov;cov khoom no nthuav tawm qib siab ntawm delocalization ntawm tus nqi zoo.Nws cov qauv tau kawm los ntawm X-ray.