9-(bromomethylidene)-9H-fluorene

Base Information

• Chemical Name: 9-(bromomethylidene)-9H-fluorene
• CAS No.: 4612-64-0
• Molecular Formula: C14H9Br
• Molecular Weight: 257.1253
• Mol file: 4612-64-0.mol

Synonyms:

Chemical Property of 9-(bromomethylidene)-9H-fluorene

Chemical Property:

• Vapor Pressure: 4.59E-05mmHg at 25°C
• Boiling Point: 360.5°C at 760 mmHg
• Flash Point: 188.4°C
• Density: 1.585g/cm³

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 9-(bromomethylidene)-9H-fluorene

There total 15 articles about 9-(bromomethylidene)-9H-fluorene which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 96.0%

9-fluorenone (486-25-9,952573-42-1) + (bromomethyl)triphenyl phosphonium bromide (1034-49-7) → 9-(bromomethylene)-9H-fluorene (4612-64-0)

Guidance literature:

(bromomethyl)triphenyl phosphonium bromide; With sodium hexamethyldisilazane; In tetrahydrofuran; at -60 ℃; for 0.666667h; Inert atmosphere;

9-fluorenone; In tetrahydrofuran; at -60 - 20 ℃; Inert atmosphere;

With water; In tetrahydrofuran; Inert atmosphere;

DOI:10.1002/chem.201002095

Reference yield: 82.0%

9-fluorenone (486-25-9,952573-42-1) + (bromomethylene)triphenylphosphorane (39598-55-5) → 9-(bromomethylene)-9H-fluorene (4612-64-0)

Guidance literature:

In tetrahydrofuran; at -60 - 20 ℃; Inert atmosphere;

DOI:10.1002/chem.201001779

Reference yield: 78.0%

9-methylene-fluorene (4425-82-5) → 9-(bromomethylene)-9H-fluorene (4612-64-0)

Guidance literature:

With ethyl bromide; dimethyl sulfoxide; at 110 ℃; for 5h; chemoselective reaction; Inert atmosphere; Sealed tube; Green chemistry;

DOI:10.1080/00397911.2021.1943751

upstream raw materials:

fluoren-9-ylidene-acetic acid

9-fluorenone

(bromomethyl)triphenyl phosphonium bromide

Fluorenyliden-bromessigsaeure-methylester

Downstream raw materials:

9-[2-(2,2-Diphenyl-vinyl)-4,4-diphenyl-but-3-enylidene]-9H-fluorene

9-((E)-4,4-Diphenyl-buta-1,3-dienyl)-9-fluoren-9-ylidenemethyl-9H-fluorene

1,1,5,5-Bis-biphenylen-3-diphenylvinyl-penta-1,4-dien

Refernces

• 1、 De Tar et al.. "-". . p. 2183. Retrieved 1950.
• 2、 Banuelos-Prieto, Jorge,Agarrabeitia, Antonia R.,Garcia-Moreno, Inmaculada,Lopez-Arbeloa, Inigo,Costela, Angel,Infantes, Lourdes,Perez-Ojeda, M. Eugenia,Palacios-Cuesta, Marta,Ortiz, Maria J.. "Controlling optical properties and function of BODIPY by using asymmetric substitution effects". . p. 14094 - 14105. Retrieved 2010.
• 3、 Akhmetov, Vladimir,Amsharov, Konstantin,Feofanov, Mikhail,Sharapa, Dmitry I.. "Alumina-Mediated π-Activation of Alkynes". . p. 15420 - 15426. Retrieved 2021/09/30.