5-methoxybenzopyran

Base Information

• Chemical Name: 5-methoxybenzopyran
• CAS No.: 41580-69-2
• Molecular Formula: C₁₀H₁₀O₂
• Molecular Weight: 162.188
• Mol file: 41580-69-2.mol

Synonyms:

Chemical Property of 5-methoxybenzopyran

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 5-methoxybenzopyran

There total 1 articles about 5-methoxybenzopyran 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:

m-methoxyphenyl 2-propynyl ether (41580-72-7) → 3-chromene (18385-89-2) + 4-methoxy-2-methylbenzofuran (3781-89-3) + 6-methoxy-2-methylbenzofuran (29040-48-0) + 5-methoxybenzopyran (41580-69-2)

Guidance literature:

With cesium fluoride; N,N-diethylaniline; for 8h; Heating;

DOI:10.3987/COM-94-S(B)46

Reference yield:

5-methoxybenzopyran (41580-69-2) → 3,4-dihydro-5-hydroxy-2H-1-benzopyran (13849-32-6)

Guidance literature:

Multi-step reaction with 2 steps

1: H₂ / 10 percent Pd-C / acetic acid / Ambient temperature

2: 47 percent (w/v) HBr / acetic acid / 100 - 110 °C

With hydrogen bromide; hydrogen; palladium on activated charcoal; In acetic acid;

DOI:10.1248/cpb.35.632

upstream raw materials:

m-methoxyphenyl 2-propynyl ether

Downstream raw materials:

3,4-dihydro-5-hydroxy-2H-1-benzopyran