4,5-Dimethylpsoralen

Base Information

• Chemical Name: 4,5-Dimethylpsoralen
• CAS No.: 4046-74-6
• Molecular Formula: C13H10O3
• Molecular Weight: 214.22
• Hs Code.: 2932999099
• Mol file: 4046-74-6.mol

Synonyms:4-5'-dimethylpsoralen;2,5-Dimethyl-7-oxo-7H-furo<3.2-g><1>benzopyran;2,5-dimethyl-furo[3,2-g]chromen-7-one;2,5-dimethylfuro<3,2-g>benzopyran-7-one;7H-Furo(3,2-g)(1)benzopyran-7-one,2,5-dimethyl;

Chemical Property of 4,5-Dimethylpsoralen

Chemical Property:

• Vapor Pressure: 5.05E-06mmHg at 25°C
• Melting Point: 165.0-165.5 °C
• Boiling Point: 381.5°C at 760 mmHg
• Flash Point: 184.5°C
• PSA: 43.35000
• Density: 1.273g/cm³
• LogP: 3.15600

Purity/Quality:

99%min ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 4,5-Dimethylpsoralen

There total 8 articles about 4,5-Dimethylpsoralen 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: 40.7%

4-methyl-6-(2',3'-dibromopropyl)-7-acetoxycoumarin (3993-51-9) → 4,5'-dimethylpsoralen (4046-74-6)

Guidance literature:

With potassium hydroxide; In ethanol; for 1.33333h; Heating;

Reference yield:

(7-Acetoxy-4-methyl-2-oxo-2H-chromen-6-ylmethyl)-triphenyl-phosphonium; bromide → 4,5'-dimethylpsoralen (4046-74-6)

Guidance literature:

With triethylamine; In toluene; for 16h; Yield given; Heating;

Reference yield:

6-allyl-7-hydroxy-4-methyl-2H-1-benzopyran-2-one (1616-53-1) → 4,5'-dimethylpsoralen (4046-74-6)

Guidance literature:

Multi-step reaction with 3 steps

1: 70.9 percent / acetic anhydride / 1 h / Heating

2: 79.8 percent / bromine / acetic acid / 1 h / Ambient temperature

3: 40.7 percent / 4percent KOH / ethanol / 1.33 h / Heating

With potassium hydroxide; bromine; In ethanol; acetic anhydride; acetic acid;

upstream raw materials:

4-methyl-6-(2',3'-dibromopropyl)-7-acetoxycoumarin

6-allyl-7-hydroxy-4-methyl-2H-1-benzopyran-2-one

4-methyl-6-allyl-7-acetoxycoumarin

7-allyloxy-4-methyl-2H-chromen-2-one

Refernces

• 1、 -. "Treatment methods for lymes disease and associated debilitating conditions". . . Retrieved 2008/06/13.
• 2、 -. "Treatment methods and vaccines for stimulating an immunological response against retroviruses". . . Retrieved 2008/06/13.