Citation: Jie HAN, Liang Fu ZHANG, Wen WAN. Synthesis and Mesomorphic Properties of Novel γ-Substituted β-Diketonates[J]. Chinese Chemical Letters, ;2004, 15(2): 155-158. shu

Synthesis and Mesomorphic Properties of Novel γ-Substituted β-Diketonates

Jie HAN ^1,2, ,
Liang Fu ZHANG ² ,
Wen WAN ²

1.
Department of Chemistry, Nankai University, Tianjin 300071;
2.
Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041

Received Date: 20 January 2003

The synthesis and mesomorphic properties of two series of novel γ-substituted β-diketonates have been reported. All of the compounds 2, 4-dioxo-3-pentyl 4-[[4-(n-alkoxyl) cinnamoyl]oxy]cinnamatetes Ia-If (n=7-12) exhibit two monotropic phases(N and Sc) and have a wider mesophase range than the compounds 2, 4-dioxo-3-pentyl 4-[[4-(n-alkoxyl) benzoyl]oxy] cinnamatetes IIa-IIf (n=7-12), which display one monotropic nematic phase (n=7-10) or an enantiotropic nematic phase for n=11 or two enantiotropic phases (N and Sc) for n=12.
- γ-Substituted β-diketonates,
- liquid crystal,
- synthesis
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