Kurouchi, Hiroaki et al. published their research in Chemistry – A European Journal in 2014 | CAS: 22245-96-1

7-Nitro-3,4-dihydroisoquinolin-1(2H)-one (cas: 22245-96-1) belongs to isoquinoline derivatives. Isoquinoline is a structural isomer of quinoline, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Category: isoquinoline

Protonation Switching to the Least-Basic Heteroatom of Carbamate through Cationic Hydrogen Bonding Promotes the Formation of Isocyanate Cations was written by Kurouchi, Hiroaki;Sumita, Akinari;Otani, Yuko;Ohwada, Tomohiko. And the article was included in Chemistry – A European Journal in 2014.Category: isoquinoline This article mentions the following:

Ortho-(methoxycarbonyl)phenyl phenethylcarbamates underwent rapid cyclocondensation mediated by triflic acid to yield dihydroisoquinolinones with improved chemoselectivities over other phenethylcarbamates; the improved rate of cyclization is attributed to the improved formation of labile protonated carbamates and isocyanates, formed by protonation of the carbamate ester oxygen atom (rather than the carbamate carbonyl oxygen atom) mediated through hydrogen bonding to the pendant methoxycarbonyl group. The mechanism of the cyclocondensations of ortho-(methoxycarbonyl)phenyl phenethylcarbamates was studied through determination of the kinetics of other substituted phenethylcarbamates and of the dependence of cyclocondensation rate on acidity, through calculations of the transition state free energies, entropies, and enthalpies, and through NMR spectroscopy of models of mono- and diprotonated salicylates. Triflic acid-mediated monoprotonation of the carbamoyl salicylates yielded reactive protonated carbamates and isocyanates; in contrast, superacid-mediated diprotonation at the Me ester oxygen of the salicylate and the carbonyl oxygen of the carbamate afforded a rather stable dication, which did not readily undergo carbon-oxygen bond cleavage. In the experiment, the researchers used many compounds, for example, 7-Nitro-3,4-dihydroisoquinolin-1(2H)-one (cas: 22245-96-1Category: isoquinoline).

7-Nitro-3,4-dihydroisoquinolin-1(2H)-one (cas: 22245-96-1) belongs to isoquinoline derivatives. Isoquinoline is a structural isomer of quinoline, which have antiseptic, antipyretic and anti-cyclic properties, and can be used as antimalarial drugs and for the preparation of other antimalarial medicine. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Category: isoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem