2,3-Dibromomaleimide,3,4-Dibromopyrrole-2,5-dione

2,3-Dibromomaleimide,3,4-Dibromopyrrole-2,5-dione - Names and Identifiers

Name	2,3-Dibromomaleinimide
Synonyms	Dibromo-maleimid Dibromomaleinimide DIBROMOMALEINIMIDE 2,3-Dibromomaleimide 3,4-Dibromomallimide 3,4-Dibromomaleimide 2,3-Dibromomaleinimide 3,4-Dibromo-1H-pyrrole-2,5-dione 1H-Pyrrole-2,5-dione, 3,4-dibroMo- 3,4-dibromo-3-pyrroline-2,5-quinone 3,4-Dibromo-1H-pyrrole-2,5(2H,5H)-dione 3,4-dibroMo-2,5-dihydro-1H-pyrrole-2,5-dione 2,3-Dibromomaleimide,3,4-Dibromopyrrole-2,5-dione
CAS	1122-10-7
InChI	InChI=1/C4HBr2NO2/c5-1-2(6)4(9)7-3(1)8/h(H,7,8,9)
InChIKey	BIKSKRPHKQWJCW-UHFFFAOYSA-N

2,3-Dibromomaleimide,3,4-Dibromopyrrole-2,5-dione - Physico-chemical Properties

Molecular Formula	C4HBr2NO2
Molar Mass	254.86
Density	2.4707 (rough estimate)
Melting Point	228-231°C(lit.)
Boling Point	275.3±40.0 °C(Predicted)
Flash Point	120.3°C
Solubility	soluble in Methanol
Vapor Presure	0.00514mmHg at 25°C
Appearance	Gray white sheet, chip, powder
Color	Light yellow to Brown
Maximum wavelength(λmax)	['243nm(MeOH)(lit.)']
pKa	4.69±0.60(Predicted)
Storage Condition	Sealed in dry,Room Temperature
Refractive Index	1.6400 (estimate)
MDL	MFCD00185696
Physical and Chemical Properties	WGK Germany:3 RTECS:ON5100000

2,3-Dibromomaleimide,3,4-Dibromopyrrole-2,5-dione - Risk and Safety

Hazard Symbols	C - Corrosive
Risk Codes	R34 - Causes burns R43 - May cause sensitization by skin contact
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
UN IDs	UN 1759 8/PG 2
WGK Germany	3
RTECS	ON5100000
Hazard Class	8
Packing Group	Ⅱ

2,3-Dibromomaleimide,3,4-Dibromopyrrole-2,5-dione - Introduction

3,4-Dibromo -1H-pyrrole-2, 5-dione is an organic compound with the following properties, uses, methods of preparation and safety information:

Nature:
-Appearance: Colorless crystalline solid.
-Solubility: Soluble in organic solvents, such as dimethyl sulfoxide and acetonitrile.
-Melting point: about 130-135°C.
-Density: about 2.4g/cm³.

Use:
3,4-Dibromo -1H-pyrrole-2, 5-dione is commonly used as electrophilic fluorination reagent in organic synthesis. It can react with fluoride ions to produce the corresponding fluorinated products. In addition, it can also be used as a synthetic intermediate for aromatic compounds.

Preparation Method:
The preparation of 3,4-dibromo -1H-pyrrole-2, 5-dione can be obtained by the reaction of 2,3-pyrrolidine dione and carbon tetrabromide under alkaline conditions.

Safety Information:
-3,4-Dibromo -1H-pyrrole-2, 5-dione has certain toxicity, so it is necessary to take appropriate safety measures when handling, such as wearing protective gloves and safety glasses, and ensure that it is in a well-ventilated laboratory environment.
-Avoid contact with skin and inhalation of substances such as powder.
-If you come into contact with skin or eyes, rinse immediately with plenty of water and seek medical attention.
-Please store and handle this compound properly to avoid accidents or environmental pollution.
-When using or disposing of this compound, please comply with relevant laws and regulations and operating specifications.

Last Update：2024-04-09 20:52:54