Synthesis and Photochromic Behaviour of Naphthopyrans, Pyranoquinolines, Pyranoquinazolines and Pyranoquinoxalines
作者:Jean-Luc Pozzo、Andr� Samat、Robert Guglielmetti、Roger Dubest、Jean Aubard
DOI:10.1002/hlca.19970800310
日期:1997.5.12
annulated with different six-membered azaheterocycles were prepared, i.e., the 3H-pyra-no[3,2-f]quinolines 9/10 and 14, the 8H-pyrano[2,3-h]isoquinoline 11, the 8H-pyrano[3,2-f]quinazolme 12, the 8-H-pyrano[3,2-f]quinoxaline 13, and the 2H-pyrano[2,3-f]isoquinoline 15. The synthesis was achieved using conveniently substituted α,β-unsaturated aldehydes and organotitanium intermediates arising from azaheterocyclic
用不同的六元氮杂杂环稠新色烯制备,即,在3 ħ -pyra-无[3,2- ˚F〕喹啉9/10和14中,8 ħ吡喃并[2,3- ħ ]异喹啉11, 8 ħ吡喃并[3,2- ˚F ] quinazolme 12,8- ħ吡喃并[3,2- ˚F ]喹喔啉13,和2 ħ吡喃并[2,3- ˚F ]异喹啉15。使用便利取代的α,β-不饱和醛和氮杂环杂环酚产生的有机钛中间体可以完成合成。除了相应的萘并吡喃以外,还研究了它们的光致变色行为(光致变色产率,光merocyanines的UV / VIS光谱,热漂白速率常数)。通过研究光致变色性质和溶剂效应,定量研究了吡喃部分中的杂环效应和取代基的作用。二芳基取代的叠氮基稠合色酮,特别是异喹啉衍生物,对光金属花青显示出更高的着色能力和红移谱,为光致变色应用开辟了新的前景。