The synthetic scope of the Friedländer condensation in the preparation of chiral alkyl-substituted 1,10-phenanthrolines has been investigated. A range of chiral [x,y-b]-cycloalkeno-condensed phenanthrolines has been prepared in one step from steroidal or other cyclic ketones from the chiral pool and 8-amino-7-quinolinecarbaldehyde (1) via base-catalyzed condensation. Phenanthroline derivatives are
研究了手性烷基取代的1,10-
菲咯啉的制备中弗里德兰德缩合的合成范围。一步法制得了一系列手性[x,yb]-环烯基缩合的
菲咯啉,这些化合物是通过手性池中的甾族或其他环状酮与8-
氨基-
7-喹啉甲醛(1)经碱催化缩合反应制得的。苯并
菲林衍
生物可以不受阻碍地以高收率生成酮,但即使在收率低的情况下,即使在诸如
樟脑等空间拥挤的底物下,反应也可以进行。Friedländer缩合的用途已扩展到由单烷基取代的
乙醛合成手性3-烷基取代的
菲咯啉。