申请人:BRITISH TECHNOLOGY GROUP LIMITED
公开号:EP0391631A1
公开(公告)日:1990-10-10
Compounds of formula (I);
in which A represents certain pyridinium, quinolinium, isoquinolinium or pyrimidinium groups unsubstituted or substituted by F, Cl, Br, CN or NO₂ and substituted on nitrogen by a straight hydrocarbon group of at least 6 carbon atoms which is unsubstituted or substituted by fluorine and the chain of which may comprise a group -O-, -S-, -CO-O-, -O-CO-, -NH-CO-, -CO-NH- or carbon to carbon double or triple bond, or R represents a phenyl group substituted in the 3- or 4-position by a group R as hereinbefore defined or by a corresponding group containing less than 6 carbon atoms;
B is H, CH₃, F, Cl, Br, CN or NO₂; and D represents certain phenyl or naphthyl groups are photochromic compounds.
式(I)化合物;
其中 A 代表某些未被或被 F、Cl、Br、CN 或 NO₂ 取代的吡啶鎓、喹啉鎓、异喹啉鎓或嘧啶鎓基团,在氮上被至少 6 个碳原子的直烃基取代,该直烃基团未被或被氟取代,其链可包括基团 -O-、-S-、-CO-O-、-O-CO-、-NH-CO-、-CO-NH- 或碳对碳双键或三键,或 R 代表苯基、-S-、-CO-O-、-O-CO-、-NH-CO-、-CO-NH- 或碳对碳双键或三键,或者 R 代表在 3 位或 4 位被前文定义的基团 R 或含少于 6 个碳原子的相应基团取代的苯基;
B 是 H、CH₃、F、Cl、Br、CN 或 NO₂;以及 D 代表某些苯基或萘基的光致变色化合物。