Novel polycyclic heterocycles. XII. Reactions of 1,2-dihydro-11-(trifluoromethyl)-3<i>H</i>-7<i>H</i>-quino[8, 1-<i>cd</i>] [1,5]-benzoxazepin-3-one with aromatic aldehydes
作者:Harry L. Yale、Ramesh B. Petigara
DOI:10.1002/jhet.5570110409
日期:1974.8
The Claisen-Schmidt condensation between 1,2-dihydro-11-(trifluoromethyl)-3H,7H-quino-[8,1 -cd][1,5]benzoxazepin-3-one, 1, and aromatic aldehydes has been investigated. The acid catalyzed reactions yielded the trans-2-benzylidene derivatives, 4; the structures and configurations of the group of compounds represented by 4 have been confirmed by pmr in conjunction with the Eu(fod)3 shift reagent. In
1,2-二氢-11-(三氟甲基)-3 H,7 H-喹啉-[8,1- cd ] [1,5]苯并恶唑啉-3-one,1和芳族醛之间的Claisen-Schmidt缩合反应具有被调查了。酸催化的反应产生反式-2-亚苄基衍生物4。pmr结合Eu(fod)3转化试剂已证实了4所代表的化合物组的结构和构型。相反,用氢氧化钠催化可得到异构的2-苄基-内环环状α,β-不饱和酮3。最后,4可以通过氢氧化钠异构化成相应的3。讨论了这些化合物的ir,uv和pmr光谱。