4,7-dibroMo-,4,7-DibroMo-1,2,3-benzothiadiazole

4,7-dibroMo-,4,7-DibroMo-1,2,3-benzothiadiazole - Names and Identifiers

Name	4,7-DIBROMO-2,1,3-BENZOTHIADIAZOLE
Synonyms	DBBTA K0092 4,7-Dibromo-2,1,3-Benzothidiazole 4,7-Dibromobenzo-2,1,3-thiadiazole 4,7-DIBROMO-2,1,3-BENZOTHIADIAZOLE 4,7-Dibromobenzo[c][1,2,5]thiadiazole 4,7-dibroMo-,4,7-DibroMo-1,2,3-benzothiadiazole 4,7-Dibromobenzo[c]-1,2,5-thiadiazole (Dibromo BTD)
CAS	15155-41-6
EINECS	629-084-2
InChI	InChI=1/C6H2Br2N2S/c7-3-1-2-4(8)6-5(3)9-11-10-6/h1-2H

4,7-dibroMo-,4,7-DibroMo-1,2,3-benzothiadiazole - Physico-chemical Properties

Molecular Formula	C6H2Br2N2S
Molar Mass	293.97
Density	2.229±0.06 g/cm3(Predicted)
Melting Point	186-190°C
Boling Point	326.6±22.0 °C(Predicted)
Flash Point	151.3°C
Solubility	Soluble in toluene.
Vapor Presure	0.000405mmHg at 25°C
Appearance	Crystalline powder
Color	White to Light yellow to Light orange
Odor	Light yellow crystals
pKa	-3.37±0.50(Predicted)
Storage Condition	Inert atmosphere,Room Temperature
Refractive Index	1.756
MDL	MFCD00658844

4,7-dibroMo-,4,7-DibroMo-1,2,3-benzothiadiazole - Risk and Safety

Risk Codes	22 - Harmful if swallowed
Safety Description	36/37 - Wear suitable protective clothing and gloves.
UN IDs	UN 2811 6.1/PG 3
WGK Germany	3
HS Code	29349990
Hazard Class	6.1
Packing Group	Ⅲ

4,7-dibroMo-,4,7-DibroMo-1,2,3-benzothiadiazole - Reference Information

use

4, 7-dibromo-2, 1, 3-benzothiadiazole is a useful building block for OLED construction.
4, 7-dibromo-2, 1, 3-benzothiadiazole is an organic intermediate, which can be obtained by bromination of benzothiadiazole with N-bromosuccinimide, or Benzo [c][1,2,5] thiadiazole is prepared from benzene -1, 2-diamine first ring, and then obtained by bromination of dibromohydantoin.
Monomer, used to synthesize luminescent and conductive polymers

preparation

under the protection of nitrogen, benzothiadiazole (6.81g,50mmol) was dissolved in 200mL of concentrated sulfuric acid, N-bromosuccinimide (18.71g,105mol) was added in three batches at 60 ℃, and stirred for 12 hours. Pour the reaction solution into 900mL ice water, filter, filter residue with deionized water, methanol, hexane three times each. Repeat this operation for 3 times, and dry the final filter residue to obtain solid product with 69% yield. 1H NMR, 13CNMR, MS and elemental analysis results show that the obtained compound is the target product.

Last Update：2024-04-09 02:00:07

4,7-dibroMo-,4,7-DibroMo-1,2,3-benzothiadiazole

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