哌啶-1-甲醛置于lithium Diisopropyl Amide,水体系中,用 四氢呋喃,环己烷,乙基苯 作为反应溶剂,化学反应 4.5H,以81%的收率获得产物6-溴-2,3-二氟苯甲醛
参考文献:[de] Dibenzofuran-,Dibenzothiophen-Und Fluorenderivate Dibenzofuran Derivatives,Dibenzothiophene Derivatives,And Fluorene Derivatives[fr] Derives De Dibenzofurane,De Dibenzothiophene Et De Fluorene
标题:[de] Dibenzofuran-,Dibenzothiophen-Und Fluorenderivate Dibenzofuran Derivatives,Dibenzothiophene Derivatives,And Fluorene Derivatives[fr] Derives De Dibenzofurane,De Dibenzothiophene Et De Fluorene
摘要:本发明涉及式(I)的化合物,其中y,X1,X2,X3,R1,R2,A1,A2,Z1,Z2,M和n如权利要求1所定义,其用作液晶介质中的组分以及包含所述液晶介质的电光显示元件的用途.