303186-36-9 Usage
Preparation
The preparation of PGUQU 3F is as follows:1.00 g (2.90 mmol) of?5-[4-chloro-2,6-difluorophenyl)difluoromethoxy]-1,2,3-trifluorobenzene and 0.764 g (2.96 mmol, 1.02 equivalent amount) of 4'-propyl-3-fluoro-4-biphenylboronic acid were placed in a 50-ml SUS autoclave, after which 46.7 mg (0.05 equivalent amount) of TBAB, 1.10 mg (0.0008 equivalent amount) of 2-dicyclohexylphosphino-2',4',6'-triisopropylbiphenyl (purchased from Johnson Matthey Japan Inc.), and 4.94 mg (0.0004 equivalent amount) of 5% palladium carbon (50% moisture content, manufactured by N.E. Chemcat Corporation; E-Type) were placed in the autoclave. The autoclave was subsequently sealed, and the atmosphere therein was replaced with nitrogen. Thereafter, 3.0 ml of deaerated water and 1.0 ml of deaerated DMAC were added thereto, and 0.44 g (1.5 equivalent amount) of triethylamine was further added thereto, followed by stirring at the reaction liquid temperature of 95°C for 3 hours. The mixture was stirred at room temperature for 20 minutes, and 5.0 ml of toluene and 2.0 ml of water were added to the reaction mixture, followed by additional stirring for 15 minutes. The reaction yield was 99.4% (quantified by 19F NMR).
Check Digit Verification of cas no
The CAS Registry Mumber 303186-36-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,3,1,8 and 6 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 303186-36:
(8*3)+(7*0)+(6*3)+(5*1)+(4*8)+(3*6)+(2*3)+(1*6)=109
109 % 10 = 9
So 303186-36-9 is a valid CAS Registry Number.
303186-36-9Relevant articles and documents
Novel liquid crystalline four ring chain difluoromethyleneoxy compounds for quicker response LC mixtures
Hiraoka, Takashi,Fujita, Atsuko,Kubo, Yasuhiro,Matsui, Shuichi,Miyazawa, Kazutoshi
, p. 89 - 95 (2009)
A series of chemically stable novel liquid crystalline four ring chain compounds (1a-1c) having a difluoromethyleneoxy (CF2O) linkage moiety have been designed and prepared, and their properties have been thoroughly investigated. The novel compounds intrinsically possess much higher positive Δε (>32) and Dn (>0.190), relatively low viscosity, wider nematic phase temperature ranges and significantly higher clearing temperatures in comparison to the analogous three ring chain CF2O compound (2) that is currently applied in almost all the latest TN-TFT monitors, notebook PCs and IPS-TVs. Copyright Taylor & Francis Group, LLC.
LIQUID CRYSTAL COMPOUND HAVING DIFLUOROPROPENYLENEOXY BONDING GROUP
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Page/Page column 57, (2012/02/06)
The invention provides a liquid crystal compound having general physical properties necessary for the compound, namely stability to heat, light and so forth, a wide temperature range of a liquid crystal phase, a high clearing point, a good compatibility w
