4-Bromo-1,8-naphthalic anhydride

Base Information

• Chemical Name: 4-Bromo-1,8-naphthalic anhydride
• CAS No.: 21563-29-1
• Molecular Formula: C12H5BrO3
• Molecular Weight: 277.074
• Hs Code.: 2942000000
• Mol file: 21563-29-1.mol

Synonyms:Naphthalic anhydride, 2-bromo- (8CI);2-Bromo-1,8-naphthalic anhydride;1H,3H-Naphtho[1,8-cd]pyran-1,3-dione,4-bromo-;

Chemical Property of 4-Bromo-1,8-naphthalic anhydride

Chemical Property:

• Appearance/Colour: loose-shaped white or off-white crystalline powder
• Vapor Pressure: 6.66E-09mmHg at 25°C
• Melting Point: 217-219 ºC
• Refractive Index: 1.733
• Boiling Point: 467.2 ºC at 760 mmHg
• Flash Point: 236.3 ºC
• PSA: 43.37000
• Density: 1.812 g/cm³
• LogP: 2.91290
• Storage Temp.: Room temperature.

Purity/Quality:

98%,99%, ^*data from raw suppliers

4-Bromobenzo[de]isochromene-1,3-dione 97% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 4-Bromo-1,8-naphthalic anhydride

There total 6 articles about 4-Bromo-1,8-naphthalic anhydride 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: 5.0%

4-bromophenalenone (75839-71-3) → 4-bromo-1,8-naphthalene anhydride (21563-29-1)

Guidance literature:

With potassium permanganate; In acetone; Ambient temperature;

Reference yield:

3-bromoacenaphthene (5209-31-4) → 4-bromo-1,8-naphthalene anhydride (21563-29-1)

Guidance literature:

With potassium dichromate; acetic acid;

Reference yield:

4-hydroxy-1H-phenalene-1-one (39981-72-1) → 4-bromo-1,8-naphthalene anhydride (21563-29-1)

Guidance literature:

Multi-step reaction with 3 steps

1: 0.43 g / ammonium acetate / 2 h / 130 - 140 °C

2: 1)nitrosylsulfuric acid, sodium nitrite, 2) cuprous bromide, 48percent hydrobromic acid / 1) acetic acid, 1 - 5 deg C, 20 min, 2) 1 - 5 deg C, 20 min

3: 5 percent / KMnO₄ / acetone / Ambient temperature

With ammonium acetate; potassium permanganate; nitrosylsulfuric acid; hydrogen bromide; copper(I) bromide; sodium nitrite; In acetone;

upstream raw materials:

3-bromoacenaphthene

4-bromophenalenone

3-bromoacenaphthylene

4-hydroxy-1H-phenalene-1-one

Downstream raw materials:

4-bromo-N-butylnaphthalimide

4-(1-phenylethynyl)-1,8-naphthalic anhydride

6-(4,7-bis(4-(N,N-diphenylamino)phenyl)-2H-benzo[d][1,2,3]triazol-2-yl)-2-hexyl-1H-benzo[de]isoquinoline-1,3(2H)-dione

3-bromo-7H-benzo[de]benzo[4,5]imidazo[2,1-a]isoquinolin-7-one

Refernces