6-acetoxy-2,5,7,8-tetramethyl-2-<(4-nitrophenoxy)methyl>-2H-1-benzopyran

Base Information

• Chemical Name: 6-acetoxy-2,5,7,8-tetramethyl-2-<(4-nitrophenoxy)methyl>-2H-1-benzopyran
• CAS No.: 107188-36-3
• Molecular Formula: C₂₂H₂₃NO₆
• Molecular Weight: 397.428
• Mol file: 107188-36-3.mol

Synonyms:6-acetoxy-2,5,7,8-tetramethyl-2-<(4-nitrophenoxy)methyl>-2H-1-benzopyran

Chemical Property of 6-acetoxy-2,5,7,8-tetramethyl-2-<(4-nitrophenoxy)methyl>-2H-1-benzopyran

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 6-acetoxy-2,5,7,8-tetramethyl-2-<(4-nitrophenoxy)methyl>-2H-1-benzopyran

There total 5 articles about 6-acetoxy-2,5,7,8-tetramethyl-2-<(4-nitrophenoxy)methyl>-2H-1-benzopyran 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: 94.0%

6-acetoxy-2,5,7,8-tetramethyl-2-(4-nitrophenoxymethyl)chroman-4-ol (107188-35-2) → 6-acetoxy-2,5,7,8-tetramethyl-2-<(4-nitrophenoxy)methyl>-2H-1-benzopyran (107188-36-3)

Guidance literature:

With toluene-4-sulfonic acid; In benzene; for 3h; Heating;

Reference yield:

4-nitro-phenol (100-02-7,78813-13-5,89830-32-0) → 6-acetoxy-2,5,7,8-tetramethyl-2-<(4-nitrophenoxy)methyl>-2H-1-benzopyran (107188-36-3)

Guidance literature:

Multi-step reaction with 3 steps

1: 71 percent / K₂CO₃, NaI / acetone

2: ZnBr₂ / CH₂Cl₂ / 2 h / 25 °C

3: DMAP / CH₂Cl₂ / 1 h / Ambient temperature

With dmap; potassium carbonate; sodium iodide; zinc dibromide; In dichloromethane; acetone;

DOI:10.1016/S0040-4039(98)02266-7

Reference yield:

4-chloro-3-methylbut-2-enal dimethylacetal → 6-acetoxy-2,5,7,8-tetramethyl-2-<(4-nitrophenoxy)methyl>-2H-1-benzopyran (107188-36-3)

Guidance literature:

Multi-step reaction with 3 steps

1: 71 percent / K₂CO₃, NaI / acetone

2: ZnBr₂ / CH₂Cl₂ / 2 h / 25 °C

3: DMAP / CH₂Cl₂ / 1 h / Ambient temperature

With dmap; potassium carbonate; sodium iodide; zinc dibromide; In dichloromethane; acetone;

DOI:10.1016/S0040-4039(98)02266-7

upstream raw materials:

6-acetoxy-2,5,7,8-tetramethyl-2-(4-nitrophenoxymethyl)chroman-4-ol

acetic anhydride

2,5,7,8-tetramethyl-2-(4-nitrophenoxy)methyl-2H-1-benzopyran-6-ol

4-nitro-phenol

Downstream raw materials:

α-{2-[4-(2,4-Dioxothiazolidin-5-ylmethyl)phenoxymethyl]-2,5,7,8-tetramethylchroman-6yloxy}acetic acid

6-acetoxy-2-[(4-aminophenoxy)methyl]-2,5,7,8-tetramethylchromane