Mallick, Sudesh published the artcileOxidative Coupling of Carbazoles: A Substituent-Governed Regioselectivity Profile, Synthetic Route of 57103-14-7, the publication is Journal of Organic Chemistry (2019), 84(1), 73-93, database is CAplus and MEDLINE.
Oxidative C-C coupling of carbazoles possessing various substituents is demonstrated in the presence of organic (metal-free) recyclable oxidants, such as DDQ or CA/H+, for accessing bicarbazole regioisomers. Differently substituted carbazoles are examined to showcase regioselective discrimination (3,3′- vs. 1,3′-bicarbazoles) and preferences based on sterics and electronics in oxidative coupling. Finally, a mechanism that involves the carbazole radical cation has been traced (evidenced) and proposed on the basis of the UV-vis-NIR absorption and EPR spectroscopy results. This study underlines the strategic chem. preparation of a series of bicarbazoles in an efficient manner.
Journal of Organic Chemistry published new progress about 57103-14-7. 57103-14-7 belongs to isoxazole, auxiliary class Fused Tricycles,Carbazoles, name is 9-(4-Fluorophenyl)-9H-carbazole, and the molecular formula is C18H12FN, Synthetic Route of 57103-14-7.
Referemce:
https://en.wikipedia.org/wiki/Isoxazole,
Isoxazole | C3H3NO – PubChem