On August 31, 1997, Kang, Seok Ho; Kim, Jaheon; Kim, Jinho; Hahn, Jong Hoon; Kim, Kimoon published an article.Synthetic Route of 5709-67-1 The title of the article was Syntheses, x-ray structures and second harmonic generation efficiencies of fused ring heterocycles. And the article contained the following:
Second harmonic generation efficiencies of a number of fused ring heterocyclic compounds bearing a nitro group were measured using the Kurtz powder method. Among them, 5-nitroindole has the highest SHG efficiency, 20 times as high as that of urea reference Several 5-nitroindole derivatives were synthesized in the hope of improving the SHG efficiency. None of the derivatives, however, exhibited higher SHG efficiency than the mother compound X-ray crystal structures of some of these compounds as well as that of 5-nitroindole itself were determined In the crystal structure of 5-nitroindole the angle (θ) between the mol. charge transfer axis and the polar axis of the crystal is 52.72°, which is close to the optimum value 54.74° predicted by theory. On the other hand, crystal structures of 1,2-dimethyl-5-nitroindole and 1-ethyl-5-nitroindole revealed θ values far from the optimum one, which is consistent with their low SHG efficiencies. The experimental process involved the reaction of 2-Nitro-1H-benzo[d]imidazole(cas: 5709-67-1).Synthetic Route of 5709-67-1
The Article related to fused heterocycle preparation crystal mol structure, second harmonic generation efficiency fused heterocycle, Heterocyclic Compounds (More Than One Hetero Atom): Imidazoles and other aspects.Synthetic Route of 5709-67-1
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem