Liquid crystal compositions, mixtures, elements, and dimmable devices
A liquid crystal composition, liquid crystal element technology, applied in the field of components or devices, can solve problems such as opacity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 11
[0145] Example 1.1: Synthesis of 2-ethynyl-5-heptyl-1,3-dimethylbenzene: Precursor P-1
[0146]
[0147] To a solution of 1-heptene (3.24 g, 33.0 mmol, Sigma Aldrich, St. Louis, MOUSA) in THF (15 mL, Aldrich) was added dropwise 9 boronbicyclo[3,3,1] at 0°C Solution of nonane (9-BBN) in THF (0.5M, 66.0 mL, 33.0 mmol, Aldrich). The mixture was then gradually warmed to room temperature and stirred for an additional 4 hours to yield a B-heptyl-9-BBN solution which was used in situ without further treatment. Next, add 2-bromo-5-iodo-1,3-dimethylbenzene (9.30 g 30.0 mmol, Oakwood Chemical, Estill, SC USA) and PdCl at 0 °C 2 To a mixture of (dppf) (734 mg, 0.9 mmol, Aldrich) was added THF (150 mL, Aldrich), aqueous NaOH (30 mL, 3M, Aldrich) and B-heptyl-9-BBN solution in a continuous manner. The resulting mixture was then warmed to room temperature and stirred for 12 hours. Then add H 2 o 2 (30%, 12 mL, Aldrich), the resulting mixture was extracted with hexane (Aldrich) and...
Embodiment 12
[0150] Example 1.2: Synthesis of 2-ethynyl-5-pentylbenzene: Precursor P-2
[0151]
[0152] The synthetic procedure was essentially similar to that described in Example 1.1, except that 1-bromo-4-pentylbenzene (Aldrich) was used instead of IC-1 as starting material.
Embodiment 13
[0153] Example 1.3: Synthesis of 2-ethynyl-5-(hexyloxy)-1,3-dimethylbenzene: Precursor P-3
[0154]
[0155] 4-bromo-3,5-dimethylphenol (10.05g, 50.0mmol, Aldrich), K 2 CO 3 (9 g, 65.2 mmol) (Aldrich) and DMF (25 mL, Aldrich) were combined, and the resulting mixture was stirred for 10 minutes. 1-Bromohexane (8.20 g, 50 mmol, Aldrich) was added and the reaction mixture was heated at 45 °C overnight under an argon atmosphere. After cooling to room temperature, the reaction mixture was poured into dichloromethane (-300 mL, Aldrich); any solid that precipitated was then filtered off. Concentration of the filtrate followed by purification by flash column (silica gel; 100% hexanes) yielded 2-bromo-5-(hexyloxy)-1,3-dimethylbenzene as IC-3.
[0156] Will Pd 2 (dba) 3 (600 mg) and CuI (600 mg) were added to 1,4-dioxane (75 mL), and the mixture was degassed for 20 minutes. Join P(t-Bu) 3 (24 mL; 10% solution in hexane) (Aldrich), followed by degassing for 10 minutes. Then, ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| angle | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More