Dyall, Leonard K. et al. published their research in Australian Journal of Chemistry in 1979 | CAS: 23707-37-1

Isoquinolin-7-amine (cas: 23707-37-1) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Electric Literature of C9H8N2

The relative reactivities of the seven nuclear positions of isoquinoline to free-radical phenylation was written by Dyall, Leonard K.;Pullin, Christopher J.. And the article was included in Australian Journal of Chemistry in 1979.Electric Literature of C9H8N2 This article mentions the following:

The reactivities of isoquinoline positions toward radical phenylation via photolysis of PhTl(OCOCF3)2 or the reaction of pentyl nitrite with PhNH2 decreased in the order 1 > 5 > 8 > 4 > 3 �6 �7. Eight incorrect orders have been previously predicted theor. In the experiment, the researchers used many compounds, for example, Isoquinolin-7-amine (cas: 23707-37-1Electric Literature of C9H8N2).

Isoquinolin-7-amine (cas: 23707-37-1) belongs to isoquinoline derivatives. Quinoline is a mancude organic heterobicyclic parent, an azaarene, an ortho-fused heteroarene and a member of isoquinolines. Lewis acid activation and nucleophilic attack can produce multiple regioisomers in quinolines and pyridines; isoquinolines generally only undergo attack at the 1-position.Electric Literature of C9H8N2

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem