Hydroxy-Morphinane. 9. Mitteilung. Versuche zur Racemisierung optisch aktiver 1-(p-Hydroxybenzyl)-1,2,3,4,5,6,7,8-octahydro-isochinoline
作者:A. Brossi、O. Schnider
DOI:10.1002/hlca.19560390525
日期:——
Racemic or optically active 1-(p-hydroxybenzyl)-1,2,3,4,5,6,-7,8-octahydroisoquinolines (I, Ia or Ib) as well as their O-methyl-ethers (II, IIa or IIb) are dehydrogenated in good yields to 5,6,7,8-tetrahydroisoquinoline derivatives at higher temperature. The conversion of the latter into racemic 1-(p-hydroxybenzyl)-1,2,3,4,5,6,-7,8-octahydroisoquinoline (I) or to the racemic O-methyl ether (II) is
外消旋或旋光的1-(对羟基苄基)-1,2,3,4,5,6,-7,8-八氢异喹啉(I,Ia或Ib)以及它们的O-甲基醚(II,IIa或IIb)在较高温度下以良好的产率脱氢为5,6,7,8-四氢异喹啉衍生物。后者可以转化为外消旋的1-(对羟基苄基)-1,2,3,4,5,6,-7,8-八氢异喹啉(I)或外消旋的O-甲基醚(II)。通过在异戊醇中用钠还原或通过叔N-苄基-1,2,3,4,5,6,7,8-八氢异喹啉催化还原溴代季铵盐。