Photocyclization reactions. Part 8. Synthesis of 2-quinolone, quinoline and coumarin derivatives using<i>trans-cis</i>isomerization by photoreaction
作者:Takaaki Horaguchi、Nobuyuki Hosokawa、Kiyoshi Tanemura、Tsuneo Suzuki
DOI:10.1002/jhet.5570390108
日期:2002.1
2-Quinolone 2, quinoline 3, coumarin (2H-1-benzopyran-2-one) 5, and 2H-1-benzopyran hemiacetal 6 were synthesized by photocyclization reaction of traans-o-aminocinnamoyl derivatives trans-1 and trans-o-hydroxycinnamoyl derivatives trans-4. The reaction proceeds through trans-cis isomerization followed by intramolecular cyclization.
通过traans-o-氨基肉桂酰基衍生物trans - 1和trans-的光环化反应合成了2-喹诺酮2,喹啉3,香豆素(2 H -1-苯并吡喃-2-酮)5和2 H -1-苯并吡喃半缩醛6。ø -hydroxycinnamoyl衍生物反式- 4。反应通过反式-顺式异构化进行,然后进行分子内环化。