4-Bromo-benzoic acid 3-((E)-4-bromo-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester

Base Information

• Chemical Name: 4-Bromo-benzoic acid 3-((E)-4-bromo-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester
• CAS No.: 857651-84-4
• Molecular Formula: C₂₀H₁₈Br₂O₄
• Molecular Weight: 482.169
• Mol file: 857651-84-4.mol

Synonyms:4-Bromo-benzoic acid 3-((E)-4-bromo-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester

Chemical Property of 4-Bromo-benzoic acid 3-((E)-4-bromo-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 4-Bromo-benzoic acid 3-((E)-4-bromo-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester

There total 7 articles about 4-Bromo-benzoic acid 3-((E)-4-bromo-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester 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: 73.0%

4-Bromo-benzoic acid 2-formyl-3-((E)-4-hydroxy-2-methyl-but-2-enyloxy)-benzyl ester (857652-14-3) → 4-Bromo-benzoic acid 3-((E)-4-bromo-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester (857651-84-4)

Guidance literature:

With carbon tetrabromide; triphenylphosphine; In acetonitrile; at 0 - 25 ℃; for 1.5h;

DOI:10.1021/ja0509984

Reference yield:

4-Bromo-benzoic acid 3-((E)-4-acetoxy-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester (857651-83-3) → 4-Bromo-benzoic acid 3-((E)-4-bromo-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester (857651-84-4)

Guidance literature:

Multi-step reaction with 2 steps

1: 72 percent / H₂SO₄ / methanol / 10 h / 25 °C

2: 73 percent / CBr₄; PPh₃ / acetonitrile / 1.5 h / 0 - 25 °C

With carbon tetrabromide; sulfuric acid; triphenylphosphine; In methanol; acetonitrile;

DOI:10.1021/ja0509984

Reference yield:

4-chlorobenzoyl chloride (586-75-4) → 4-Bromo-benzoic acid 3-((E)-4-bromo-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester (857651-84-4)

Guidance literature:

Multi-step reaction with 6 steps

1: 97 percent / 4-(dimethylamino)pyridine; Et₃N / CH₂Cl₂ / 0.33 h / 25 °C

2: 85 percent / aq. p-TsOH / tetrahydrofuran / 10 h / 75 °C

3: 87 percent / MnO₂ / ethyl acetate / 1.5 h / 25 °C

4: 74 percent / K₂CO₃ / acetone / 2 h / 56 °C

5: 72 percent / H₂SO₄ / methanol / 10 h / 25 °C

6: 73 percent / CBr₄; PPh₃ / acetonitrile / 1.5 h / 0 - 25 °C

With dmap; manganese(IV) oxide; carbon tetrabromide; sulfuric acid; potassium carbonate; toluene-4-sulfonic acid; triethylamine; triphenylphosphine; In tetrahydrofuran; methanol; dichloromethane; ethyl acetate; acetone; acetonitrile;

DOI:10.1021/ja0509984

upstream raw materials:

4-Bromo-benzoic acid 2-formyl-3-((E)-4-hydroxy-2-methyl-but-2-enyloxy)-benzyl ester

4-Bromo-benzoic acid 3-((E)-4-acetoxy-2-methyl-but-2-enyloxy)-2-formyl-benzyl ester

4-chlorobenzoyl chloride

(2,2-dimethyl-4H-benzo[d][1,3]dioxin-5-yl)methanol

Downstream raw materials:

4-Bromo-benzoic acid 2-(cyano-hydroxy-methyl)-3-{(E)-4-[4-methoxy-6-methyl-1-(3-methyl-but-2-enyl)-2-oxo-cyclohex-3-enyl]-2-methyl-but-2-enyloxy}-benzyl ester

4-Bromo-benzoic acid 2-cyanocarbonyl-3-{(E)-4-[4-methoxy-6-methyl-1-(3-methyl-but-2-enyl)-2-oxo-cyclohex-3-enyl]-2-methyl-but-2-enyloxy}-benzyl ester

4-Bromo-benzoic acid 2-formyl-3-{(E)-4-[4-methoxy-6-methyl-1-(3-methyl-but-2-enyl)-2-oxo-cyclohex-3-enyl]-2-methyl-but-2-enyloxy}-benzyl ester