Barton, Derek H. R. et al. published their research in Tetrahedron Letters in 1985 | CAS: 52250-50-7

1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7) belongs to isoquinoline derivatives. Although isoquinoline derivatives can be synthesized by several methods, relatively few direct methods deliver the unsubstituted isoquinoline. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.Category: isoquinoline

Selective reduction of imonium salts by sodium hydrogen telluride was written by Barton, Derek H. R.;Fekih, Abdelwaheb;Lusinchi, Xavier. And the article was included in Tetrahedron Letters in 1985.Category: isoquinoline This article mentions the following:

NaHTe efficiently reduces imonium salts in EtOH at room temperature The products of the reaction depend upon the pH. Under alk. pH only dihydro derivatives are formed. At pH 6-7, products depend on the structure of the salt. Thus, N-methylpyridinium iodide afforded N-methylpiperidine and polymeric material at pH 6. The tellurium can be recovered quant. In the experiment, the researchers used many compounds, for example, 1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7Category: isoquinoline).

1-Phenyl-3,4-dihydroisoquinoline (cas: 52250-50-7) belongs to isoquinoline derivatives. Although isoquinoline derivatives can be synthesized by several methods, relatively few direct methods deliver the unsubstituted isoquinoline. Most traditional methods of generating isoquinoline do so via oxidative aromatization of dihydro- or tetrahydro-isoquinolines, usually offering some environmental or economic advantage.Category: isoquinoline

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem