Chemistry is traditionally divided into organic and inorganic chemistry. Quality Control of 6,7-Dimethoxy-3,4-dihydroisoquinoline, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 3382-18-1
The solvent-free synthesis of 1-(hydroxyquinolyl)- and 1- (hydroxyisoquinolyl)-1,2,3,4-tetrahydroisoquinoline derivatives is reported. The tested reaction conditions involved classical heating at 80-100 C and microwave agitation at the same temperature. Both reaction conditions yielded the compounds in good yield (57-92%), but the use of microwave conditions allowed the reaction time to be decreased. Georg Thieme Verlag Stuttgart New York.
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Reference：
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem