The preparation and synthetic utility of<i>O</i>-substituted normethylmorphines
作者:Irving J. Borowitz、Vladimir Diakiw
DOI:10.1002/jhet.5570120607
日期:1975.12
the alkylations in dimethylformamide, reactive halides such as ethyl bromoacetate still give some O-alkylation. Selective N-acylation on normethylmorphine would present even more difficulty. We have developed syntheses of two phenolic O-substituted normethylmorphines which allow selective reaction on nitrogen. 3,6-Diacetylnormethylmorphine (normethylheroin) is prepared via the recently described trichloroethyl