65642-94-6 Usage
Uses
1-Bromodibenzothiophene can be used as organic synthesis intermediates and pharmaceutical intermediates, mainly used in laboratory research and development processes and chemical production processes.
Synthesis
Into a 1 L four-necked round bottom flask equipped with a stirrer, a Liebig condenser (not required), a 100 mL dropping funnel and a thermometer, 43.5 g (0.156 mol) of the amine hydrochloride obtained in the above ), 240 mL of acetic acid, 55 mL of concentrated hydrochloric acid and 143 mL of water were placed and cooled to -5 ° C. or lower in an ice water bath. Next, an aqueous solution of 12.0 g (0.173 mol) of sodium nitrite dissolved in 67 mL of water was added dropwise from the dropping funnel at a temperature not exceeding 5 ° C., and the mixture was stirred at 5 ° C. or less for 1 hour.The resulting diazo solution was transferred to a 1 L dropping funnel and set in a 1 L 4-necked round bottom flask equipped with a stirrer, a Liebig condenser (not required) and a thermometer, and then 50 % Hypophosphorous acid and 90 mL of water were added, and the mixture was cooled to -5 ° C. or lower in an ice water bath. Subsequently, the diazo solution was added dropwise at a temperature not exceeding 5 ° C., after stirring for 1 hour in an ice water bath, it was returned to room temperature and stirred at room temperature for 48 hours.The obtained reaction solution was extracted twice with 310 mL of ethyl acetate, then washed twice with 310 mL of water, dried with magnesium sulfate, magnesium sulfate was removed by suction filtration, and the solvent was distilled off under reduced pressure. Subsequently, the obtained crude oil was purified on a silica gel column using n-heptane as a developing solution to obtain 33.8 g (yield: 82.5%) of the desired bromide.
Check Digit Verification of cas no
The CAS Registry Mumber 65642-94-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,6,4 and 2 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 65642-94:
(7*6)+(6*5)+(5*6)+(4*4)+(3*2)+(2*9)+(1*4)=146
146 % 10 = 6
So 65642-94-6 is a valid CAS Registry Number.
65642-94-6Relevant articles and documents
S,S-dioxo-dibenzothiophene and phenanthroimidazole based small molecule and application thereof in electroluminescent devices
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Paragraph 0075; 0078; 0081-0082, (2020/07/12)
The invention discloses an S,S-dioxo-dibenzothiophene and phenanthroimidazole based small molecule and application thereof in electroluminescent devices. Phenanthroimidazole is used as a donor unit, S,S-dioxo-dibenzothiophene is used as an acceptor unit, and a novel donor-acceptor type blue fluorescent molecule is constructed. The molecule has the characteristics of S,S-dioxo-dibenzothiophene suchas wide band gap, high fluorescence quantum yield, strong electron affinity, high electron mobility, and also has the characteristics of phenanthroimidazole such as large conjugate rigid structure, bipolar transmission, and the like. The molecule has an asymmetric structure, and can inhibit molecular aggregation and reduce exciton quenching. In addition, the emission spectrum can be adjusted by changing the connection sites of the two units. The small molecule can be used for preparing high-efficiency blue light organic electroluminescent devices with different emission wavelengths.
Novel hetero-cyclic compound and organic light emitting device comprising the same
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Paragraph 0225; 0228; 0229, (2018/04/03)
Provided are a novel heterocyclic compound and an organic light emitting device comprising the same. A compound represented by chemical formula 1 can be used as a material for an organic layer in an organic light emitting device, thereby being capable of improving efficiency, having low driving voltage and/or improving lifespan properties of an organic light emitting device.COPYRIGHT KIPO 2018
Compound Containing At Least Two 5-Membered Heterocycle And Organic Electronic Element Using The Same, Terminal Thereof
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, (2016/11/09)
The present invention refers to 2 has a compound having a heterocyclic user one or more five won and electrical component, provides terminal with.
