6-BROMO-4-HYDROXYCOUMARIN

Base Information

• Chemical Name: 6-BROMO-4-HYDROXYCOUMARIN
• CAS No.: 4139-61-1
• Molecular Formula: C9H5 Br O3
• Molecular Weight: 241.041
• Hs Code.: 2932209090
• Mol file: 4139-61-1.mol

Synonyms:Coumarin,6-bromo-4-hydroxy- (7CI,8CI); 6-Bromo-4-hydroxycoumarin

Chemical Property of 6-BROMO-4-HYDROXYCOUMARIN

Chemical Property:

• Vapor Pressure: 0mmHg at 25°C
• Melting Point: 298°C (dec.)
• Boiling Point: 405.8°Cat760mmHg
• PKA: 4.50±1.00(Predicted)
• Flash Point: 199.2°C
• PSA: 50.44000
• Density: 1.879g/cm³
• LogP: 2.26110
• Storage Temp.: Keep in dark place,Inert atmosphere,Room temperature

Purity/Quality:

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

6-Bromo-4-hydroxycoumarin ^*data from reagent suppliers

Safty Information:

• Hazard Codes: Xi,Xn
• Statements: 20/21/22-22
• Safety Statements: 26-36/37/39

MSDS Files:

Useful:

Technology Process of 6-BROMO-4-HYDROXYCOUMARIN

There total 7 articles about 6-BROMO-4-HYDROXYCOUMARIN 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: 81.0%

5-Bromo-2-hydroxyacetophenone (1450-75-5) + Diethyl carbonate (105-58-8,76619-83-5) → 6-bromo-4-hydroxycoumarin (4139-61-1)

Guidance literature:

5-Bromo-2-hydroxyacetophenone; With sodium hydride; In toluene; at 0 ℃; for 0.333333h; Inert atmosphere;

Diethyl carbonate; at 110 ℃; for 4h; Inert atmosphere;

DOI:10.1039/c8nj01395k

Reference yield: 75.0%

→ 6-bromo-4-hydroxycoumarin (4139-61-1)

Guidance literature:

With sodium hydride; In toluene; mineral oil; for 1h; Reflux;

Reference yield:

4-bromo-phenol (106-41-2) + malonic acid (141-82-2) → 6-bromo-4-hydroxycoumarin (4139-61-1)

Guidance literature:

With zinc(II) chloride; trichlorophosphate; Heating;

DOI:10.14233/ajchem.2019.21860

upstream raw materials:

aluminium trichloride

bis(4-bromophenyl) malonate

5-Bromo-2-hydroxyacetophenone

Diethyl carbonate

Downstream raw materials:

9-bromo-2,4-diphenylpyrano[3,2-c]chromen-5(4H)-one

C₂₄H₁₄BrClO₃

C₂₆H₁₈BrClO₃

C₂₆H₁₉BrO₃S

Refernces

• 1、 Feng, Xi,Qin, Zhen,Cheng, Xinying,Liu, Dongyu,Peng, Yinghe,Huang, Huidan,Song, Bin,Bian, Jinlei,Li, Zhiyu. "Copper(II)-Catalyzed Tandem Reaction: Synthesis of Furo[3,2- c]coumarin Derivatives and Evaluation for Photophysical Properties". supporting information. p. 12537 - 12548. Retrieved 2021/09/20.
• 2、 Bhimapaka, China Raju,Karri, Shailaja,Kuncha, Madhusudana,Kurma, Siva Hariprasad,Sistla, Ramakrishna. "Synthesis and anti-inflammatory activity of 2-oxo-2H-chromenyl and 2H-chromenyl-5-oxo-2,5-dihydrofuran-3-carboxylates". . . Retrieved 2020/06/22.