No abstract

No abstract

No abstract

solvent, nature of catalyst, and especially by hydrogen-ion concentration. Pseudocodeine can thus be reduced in excellent yield to a new non-phenolic dihydropseudocodeine.2. The degradation of dihydropseudocodeine to dihydro-e-methylmorphimethine, and conversion of the latter to tetrahydro-e-methylmorphimethine is described. The preparation of tetrahydro-e-methyl-morphimethine through extension of the special hydrogenation method to e-methylmorphimethine has been accomplished.3. The degradation product from tetrahydropseudocodeine is correctly described and its relationship to hexahydro-e-methylmorphimethine established. University, Virginia

No abstract