Chemistry is traditionally divided into organic and inorganic chemistry. name: 6,7-Dimethoxy-1,2,3,4-tetrahydroisoquinoline, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 1745-07-9
A convenient synthesis of tertiary amines by alkylation of secondary amines with alkyl halides in the presence of potassium hydride and triethylamine
N-Alkylation of secondary amines with alkyl halides in the presence of potassium hydride and triethylamine gave corresponding tertiary amines in satisfactory yields.
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Reference：
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem