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Isothiocyanato-diphenylacetylene

A group, alkyl technology, applied in the field of devices comprising the component

Pending Publication Date: 2020-10-30
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, these compositions still have several disadvantages

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0901] The following examples illustrate the invention without limiting it in any way.

[0902] It is clear to those skilled in the art what properties are achievable by physical properties and to what extent they can be modified. In particular, combinations of properties which can preferably be achieved are therefore well defined for the person skilled in the art.

[0903] Synthetic example

[0904] Synthetic Example 1: 1,3-Difluoro-2-isothiocyanato-5-[2-methyl-4-[4-(trifluoromethoxy)phenyl]phenylethynyl]benzene

[0905] step 1 :1-Bromo-2-methyl-4-[4-(trifluoromethoxy)phenyl]benzene

[0906]

[0907] Tetrakis-(triphenylphosphine)-palladium-(0) (2.0 g; 1.7 mmol) was added to 1-bromo-4-iodo-2-methyl-benzene (50.5 g, 170 mmol) and carbonic acid at 80 °C Sodium (43.2g, 408mmol) in a mixture of toluene (250mL) and water (150mL), then dropwise added [4-(trifluoromethoxy)phenyl]boronic acid (35.0g, 170mmol) in ethanol (40mL ) in the solution. The reaction mixture was h...

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Abstract

Isothiocyanato-diphenylacetylene. The present invention relates to liquid-crystalline media comprising one or more compounds of formula T as defined in claim 1, and to high-frequency components comprising these media, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, tunable filters, tunable metamaterial structures, and electronic beam steering antennas, e.g. phased array antennas.

Description

technical field [0001] The present invention relates to isothiocyanatotolan derivatives, liquid crystal media containing isothiocyanato derivatives and high-frequency components comprising these media, especially microwave components for high-frequency devices, such as for making microwave Phase shifting devices, tunable filters, tunable metamaterial structures and electronic beam steering antennas (eg, phased array antennas), and to devices comprising said components. Background technique [0002] Liquid crystal media have been used for many years in electro-optic displays (liquid crystal displays - LCDs) to display information. More recently, however, liquid-crystalline media have also been proposed for use in those components for microwave technology, such as in DE 10 2004 029 429.1A and JP2005-120208(A). [0003] A. Gaebler, F. Goelden, S. Müller, A. Penirschke and R. Jakoby "Direct Simulation of Material Permittivites using an Eigen-Susceptibility Formulation of the Ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C331/28C09K19/18C09K19/32H01Q3/34H01Q21/00
CPCC07C331/28C09K19/18C09K19/322H01Q3/34H01Q21/00C09K2019/181C09K2019/183C09K19/16C09K2019/123C09K2019/188C09K2019/3063C09K2219/11C09K19/12C09K19/3003C09K19/32C09K19/3402C09K19/3491C09K2019/122C09K2019/124C09K2019/161C09K2019/3016C09K2019/3025C09K2019/3422C09K19/10C09K19/52C09K19/402
Inventor C·布洛克D·乌沙科夫B·施奈德D·克拉斯C·弗里奇
Owner MERCK PATENT GMBH
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