Asymmetric dibenzophospholes: new phosphorus-based chiral liquid crystals
✍ Scribed by Ernesto Durán; Esther Gordo; Jaume Granell; Dolores Velasco; Francisco López-Calahorra
- Book ID
- 104231709
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- French
- Weight
- 67 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
S P ,S C )-5-Ethyl-3-(2-methylbutoxy)-7-(4-undec-10-enoxyphenoxycarbonyl)-5H-dibenzophosphole 5-oxide, the first example in the literature of a new asymmetrically substituted dibenzophosphole-based group of systems with liquid-crystal properties is described.
📜 SIMILAR VOLUMES
## Abstract Liquid crystals including chiral molecule have a self‐organized helical structure with nano‐scaled periodicity, which can be regarded as a one‐dimensional (1D) photonic crystal. We have so far investigated lasing characteristics at an edge of the 1D photonic band gap (PBG) of dye‐doped
New chiral auxiliaries based on the bicyclic-isoxazolidine skeleton, 3-oxa-2,7diazabicylo[3,3,0]octane derivatives, were synthesized in 60-80% overall yields from amino acids. Asymmetric alkylation and boron aldol reaction using the auxiliaries proceeded with high selectivities. "Carboxylic amide" h