Stereoselective synthesis of methoxy substituted 1,2,3,4,4a,5,10,10a-octahydrobenzo[g]quinolines
作者:Charlotta Mellin、Uli Hacksell
DOI:10.1016/s0040-4020(01)87725-5
日期:1987.1
The preparation of the cis- and trans-isomers of 6- and 9-methoxy-1,2,3,4,4a,5,10,10a-octahydrobenzo[g]-quinoline is reported. The syntheses involved reductions of cyclic iminium chlorides, which afforded the diastereomers conveniently and in good yields. Small cis/trans ratios were obtained with NaCNBH3 as the reducing agent. Catalytichydrogenation using PtO2 in THF or t-BuOH gave the largest cis/trans