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Statement of the Problem
Results and Discussion
3 other sections not shown
3-acetic acid 7-dimethoxy 7,8-dimethoxy-4-methylcoumarin absolute ethanol acetic acid acetic anhydride acid VII acid XIX acid-O-acetic acid acidic mixture acidic product alkylation aluminum hydride reduction amidone Anal analgesic activity analgesic properties anhydrous benzofuro Calcd carbon atoms Chem chloroacetic acid compounds cooled coumaran-3-acetic acid coumaric acids coumarin cyclization Demerol derivatives diamide of 2-carboxy-6 diester ester ethyl acetate five percent sodium Half-amide of 2-Carboxy-6 hexahydropyridine hydrolysis I I _ I I I imide intramolecular Michael Ionization Constant isolated isomers lithium aluminum hydride melted methyl 2-carbomethoxy-6 methyl amine Michael Reaction mole morphinan morphine N-methyl diamide N-methyl half-amide O I I obtained OCH3 percent of theory percent sodium hydroxide piperidine potassium hydroxide Preparation of N-Methyl quaternary carbon recovered recrystallized from dilute sodium carbonate sodium hydroxide solid was collected soluble solution of methyl solvent stirred suspension synthesis weighed XIXa yield