1-Bromodibenzothiophene Chemische Eigenschaften,Einsatz,Produktion Methoden

Verwenden

1-Bromodibenzothiophene can be used as organic synthesis intermediates and pharmaceutical intermediates, mainly used in laboratory research and development processes and chemical production processes.

Synthese

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.

1-Bromodibenzothiophene Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte

1-Bromodibenzothiophene Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Firmenname	Telefon	E-Mail	Land	Produktkatalog	Edge Rate
Hebei Xinsheng New Material Technology Co., LTD.	+86-16632316109	xinshengkeji@xsmaterial.com	China	1085	58
Springchem New Material Technology Co.,Limited	+86-021-62885108 +8613917661608	info@spring-chem.com	China	2068	57
Capot Chemical Co.,Ltd.	+86-（0）57185586718 +86-13336195806	sales@capot.com	China	29640	60
Shanghai Daken Advanced Materials Co.,Ltd	+86-2158073036	info@dakenam.com	China	14014	58
Beijing Green Guardee Technology Co., Ltd	86-010-69706062	sales2@greenguardee.com	CHINA	650	58
BAYNOE CHEM CO.,LTD	+86-21-34783353 +8615000719740	baynoe@baynoe.com	CHINA	934	58
Shandong chuangyingchemical Co., Ltd.	18853181302	sale@chuangyingchem.com	CHINA	5906	58
Richest Group Ltd	18017061086	oled@richest-group.com	CHINA	5600	58
QINGDAO KAIENSI INTERNATIONAL TRADE CO.,LTD.	+86-0532-8699-9256 +8615254267723	kaley@cnfdevelop.com	China	1410	58
Neostar United (Changzhou) Industrial Co., Ltd.	+86-0519-85551759 +8613506123987	marketing1@neostarunited.com	China	8828	58

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