The author of 《Rotational spectra of indole in the lowest vibrational states》 were Vavra, K.; Lukova, K.; Kania, P.; Koucky, J.; Urban, S.. And the article was published in Journal of Molecular Spectroscopy in 2019. Synthetic Route of C8H7N The author mentioned the following in the article:
The millimetre- and submillimetre-wave rotational spectra of indole (C8H7N) have been recorded in several frequency regions from 140 to 715 GHz. Nearly 6000 rotational transitions corresponding to the ground and two vibrationally excited states ν42 and ν41 were assigned and analyzed using the A-reduced Hamiltonian. All newly measured transitions were fitted together with the previously published data yielding significantly improved rotational and centrifugal distortion constants Such highly precise mol. parameters could support future searches of the spectral features of indole in the interstellar medium as this mol. is the simplest prototype of polycyclic N-substituted aromatic hydrocarbons (PANHs), the possible sources of unidentified IR emission in the interstellar medium. In the part of experimental materials, we found many familiar compounds, such as 1H-Indole(cas: 120-72-9Synthetic Route of C8H7N)
1H-Indole(cas: 120-72-9) belongs to indole. Indole, also called Benzopyrrole, a heterocyclic organic compound occurring in some flower oils, such as jasmine and orange blossom, in coal tar, and in fecal matter. It is used in perfumery and in making tryptophan, an essential amino acid, and indoleacetic acid (heteroauxin), a hormone that promotes the development of roots in plant cuttings.Synthetic Route of C8H7N
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles