In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Quality Control of 6,7-Dimethoxy-1-methyl-3,4-dihydroisoquinoline, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 4721-98-6, name is 6,7-Dimethoxy-1-methyl-3,4-dihydroisoquinoline. In an article£¬Which mentioned a new discovery about 4721-98-6
A Modified Bischler-Napieralski Procedure for the Synthesis of 3-Aryl-3,4-dihydroisoquinolines
A modification of the Bischler-Napieralski reaction for the cyclization of (1,2-diphenylethyl)amides to the 3-aryl-3,4-dihydroisoquinolines is presented.Elimination of the amide group as the nitrile via the retro-Ritter reaction is avoided by its conversion to an N-acyliminium intermediate with oxalyl chloride-FeCl3.Removal of the oxalyl group in refluxing MeOH-sulfuric acid provides the 3,4-dihydroisoquinolines in moderate to high yields.The method is also highly effective with (2-phenylethyl)amides.
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Reference£º
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem