Facile synthesis of fused polyheterocycles containing trifluromethylated benzo[6,7]chromeno[2,3-c]pyrazoles via one-pot two-step MCRs
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Fluorine Chemistry"
DOI: 10.1016/j.jfluchem.2020.109525
Abstract: Abstract A series of non-annulated products: trifluoromethylpyrazolone-tethered trisubstituted methane derivatives were synthesized in high yields in acetonitrile solvent catalyzed by NH4OAc via one-pot, three-component reactions of 2-hydroxy-1,4-naphthoquinone, aromatic aldehydes and 1-aryl-3-trifluoromethyl-5-pyrazolone. Treatment of trifluoromethylpyrazolone-tethered trisubstituted… read more here.
Keywords: benzo chromeno; pot two; two step; one pot ... See more keywords
DMSO-assisted environmentally benign synthesis of benzo[c]-chromeno[4,3,2-gh]phenanthridines by remote oxidative hetero cross-coupling cyclization and aromatization reaction.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical communications"
DOI: 10.1039/d2cc01067d
Abstract: An unprecedented metal-free and catalyst-free synthesis of benzo[c]chromeno[4,3,2-gh]phenanthridine derivatives, a class of 1,6-diheterophenalenoid heterocycle, is reported for the first time. The oxidative cross-coupling reaction for the remote cyclization is achieved through the in situ generated… read more here.
Keywords: cross coupling; reaction; benzo chromeno; aromatization ... See more keywords
Oxidative Cyclization of 5H-Chromeno[2,3-b]pyridines to Benzo[b]chromeno[4,3,2-de][1,6]naphthyridines, Their NMR Study and Computer Evaluation as Material for LED
Sign Up to like & getrecommendations! Published in 2022 at "Molecules"
DOI: 10.3390/molecules27134156
Abstract: Oxidative cyclization is one of the most significant reactions in organic synthesis. Naphthyridine derivatives are often used as luminescence materials in molecular recognition because of their rigid planar structure and as new drugs. Organic light-emitting… read more here.
Keywords: chromeno naphthyridines; chromeno; benzo chromeno; oxidative cyclization ... See more keywords