38969-65-2Relevant academic research and scientific papers
Preparation method of 1-(4-methoxy-benzyl)-2-methyl-octahydro isoquinoline
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Paragraph 0028-0033, (2020/06/20)
The invention discloses a preparation method of 1-(4-methoxy-benzyl)-2-methyl-octahydro isoquinoline. The preparation method comprises the following steps: dissolving 1, 2, 3, 4, 5, 6, 7, 8-octahydro-1-(methoxyphenyl) methyl isoquinoline in a solvent, adding a formaldehyde solution, stirring, adding a catalyst, introducing hydrogen, carrying out a catalytic hydrogenation reaction, filtering the catalyst out after the reaction is finished, desolventizing, and carrying out distillation separation to obtain 1-(4-methoxyl-benzyl)-2-methyl-1, 2, 3, 4, 5, 6, 7, 8-octahydro isoquinoline. The method provided by the invention has the characteristics of mild and safe reaction conditions, environmental protection, side reaction reduction, high yield, good purity, simple operation and the like, so that the preparation industry is green, environment-friendly, safe and efficient, and the production cost is reduced.
Preparation of useful intermediates of dextrorphan - Note I
Passarotti,Valenti,Grianti
, p. 472 - 474 (2007/10/02)
Dextrorphan is the main metabolite of Dextromethorphan, a drug with high anti-tussive activity. In this preliminary work we report on the synthesis of two essential intermediates for its preparation: 2-(1-cyclohexenyl)ethyl amine and (R;S)-1-(4-methoxy-benzyl)-2-methyl-1,2,3,4,5,6,7,8-octahydroisoquinol ine.
Process of N-demethylating (-)-1-(p-methoxybenzyl)-2-methyl-1,2,3,4,5,6,7,8-octahydroisoquinoline
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, (2008/06/13)
N-Alkyl allylic tertiary amines are dealkylated as illustrated by treatment of (-)-1-(p-methoxybenzyl)-2-methyl-1,2,3,4,5,6,7,8-octahydroisoquinoline in cold methylene chloride with m-chloroperbenzoic acid followed by the addition of aqueous ferrous chloride to provide a good yield of (+)-1-(p-methoxybenzyl)-1,2,3,4,5,6,7,8-octahydroisoquinoline with substantial if not complete retention of optical activity. The product is an intermediate in a synthesis of the analgesic known as butorphanol.
