144649-99-0

144649-99-0 - Names and Identifiers

Name	5-Bromo-2-methoxybenzonitrile
Synonyms	Albb-008949 4-Bromo-2-cyanoanisole -Bromo-o-anisyl cyanide 5-Bromo-o-anisyl cyanide 5-BROMO-3-METHOXYBENZONITRILE 5-Bromo-2-methoxybenzonitrile Benzonitrile, 5-broMo-2-Methoxy- 5-Bromo-2-(methyloxy)benzonitrile 5-Bromo-o-anisonitrile, 4-Bromo-2-cyanoanisole
CAS	144649-99-0
InChI	InChI=1/C8H6BrNO/c1-11-8-3-2-7(9)4-6(8)5-10/h2-4H,1H3

144649-99-0 - Physico-chemical Properties

Molecular Formula	C8H6BrNO
Molar Mass	212.04
Density	1.56±0.1 g/cm3(Predicted)
Melting Point	91-92 °C
Boling Point	287.8±20.0 °C(Predicted)
Flash Point	127.9°C
Vapor Presure	0.00242mmHg at 25°C
Storage Condition	2-8°C
Refractive Index	1.584
MDL	MFCD01861260

144649-99-0 - Risk and Safety

Hazard Symbols	Xn - Harmful
Risk Codes	20/21/22 - Harmful by inhalation, in contact with skin and if swallowed.
Safety Description	36/37 - Wear suitable protective clothing and gloves.
UN IDs	UN3439
WGK Germany	3
HS Code	29269090
Hazard Class	6.1
Packing Group	III

144649-99-0 - Reference Information

Use

5-bromo-2-methoxybenzonitrile is useful as an organic and pharmaceutical intermediate. Halogenated Benzonitrile is an important organic intermediate, which is mainly used for the preparation of medicines and pesticides. It is widely used in the manufacturing process of dyes, engineering plastics and photosensitive materials.

preparation

5-bromo-2-methoxybenzonitrile was obtained from bromination of 2-methoxybenzonitrile, the preparation reaction formula is shown below: Fig. 1 5-bromo-2-methoxybenzonitrile preparation reaction formula a certain amount of 2-methoxybenzonitrile is added with a stirrer, a thermometer, in the four-necked flask of the reflux condenser tube and the tail gas absorption device, the temperature is heated to 150 ° C. Under the irradiation of a 150 W tungsten lamp, a certain amount of bromine is added dropwise, and the dropping acceleration is subject to the bromine does not overflow and the color can fade, the dropwise addition process temperature was controlled at 145-150 °c. The bromine was dropped, kept and stirred for 15 min to obtain a crude product of 5-bromo-2-methoxybenzonitrile. The purity was 89.2% as determined by gas chromatography. Further, an appropriate amount of ethanol was added to the reaction flask, and the mixture was stirred. The reaction mixture was sufficiently dispersed and washed to become a solid. A certain amount of crude 5-bromo-2-methoxybenzonitrile is heated and dissolved in a mixed solvent of appropriate amount of ethanol and ethyl acetate, cooled naturally, and a large amount of crystals are precipitated and filtered, the filter cake was dried in an oven to give 5-bromo-2-methoxybenzonitrile as a fine product.

Last Update：2024-04-09 20:52:54