2-Bromofluorene manufacturers and suppliers in india

2-Bromofluorene

Properties

Melting point:: 112-114 °C (lit.)

Boiling point:: 185 °C/135 mmHg (lit.)

Density: 1.4187 (rough estimate)

refractive index: 1.6290 (estimate)

Flash point:: 185°C/135mm

storage temp.: Sealed in dry,Room Temperature

solubility: Soluble in chloroform and ethyl acetate.

form: Slightly Crystalline Powder or Flakes

color: White to slightly yellow

BRN: 1946701

InChIKey: FXSCJZNMWILAJO-UHFFFAOYSA-N

Safety Information

Symbol(GHS): GHS07

Signal word: Warning

Hazard statements: H315-H319-H335

Precautionary statements: P261-P264-P271-P280-P302+P352-P305+P351+P338

Hazard Codes: Xi

Risk Statements: 36/37/38

Safety Statements: 26-37/39

WGK Germany: 3

HazardClass: IRRITANT

HS Code: 29039990

Use

2-bromofluorene is often used as synthetic intermediate of the OLED material in industry, by the reaction of barbier-type ultrasonic radiation, 2-bromofluorene is also used to study the conversion of aryl bromides to aryl triethoxy silane. Lab Preparation Methods: propylene carbonate is used as solvent, N-bromosuccinimide (NBS) is used as brominated reagent to carry bromination reaction of fluorine, and this reaction can synthesize 2-bromofluorene and 2,7-dibromofluorene. By the investigation of reaction temperature, NBS amount, the adding methods, the optimal reaction conditions for the synthesis of 2-bromofluorene is confirmed. The optimal reaction conditions are: reaction temperature is 23℃, the molar ratio of NBS with fluorine is 1.1:1, NBS is added by stage addition. First fluorene and propylene carbonate is preheated to 60℃, so fluorine is all dissolved, and then it drops to the reaction temperature, NBS is added by stage addition. 2-bromofluorene and 2,7-dibromofluorene recrystallizes with ethanol and acetic acid respectively, the purity of target product of liquid chromatography can reach more than 99%.