(Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid

Base Information

• Chemical Name: (Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid
• CAS No.: 1392139-32-0
• Molecular Formula: C₁₆H₉F₂NO₃S
• Molecular Weight: 333.315

Synonyms:(Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid

Chemical Property of (Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid

There total 2 articles about (Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid 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: 63.0%

3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid (272437-84-0) + 2,6-difluorobenzaldehyde (437-81-0) → (Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid (1392139-32-0)

Guidance literature:

With acetic anhydride; triethylamine; at 145 ℃; for 15h;

DOI:10.1021/jm300833h

Reference yield:

3-nitro-4-fluorobenzoic acid (453-71-4) → (Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid (1392139-32-0)

Guidance literature:

Multi-step reaction with 3 steps

1: sodium acetate / water / 24 h / 90 °C / Inert atmosphere

2: iron; acetic acid / 2.5 h / 80 - 92 °C / Inert atmosphere

3: acetic anhydride; triethylamine / 15 h / 145 °C

With sodium acetate; acetic anhydride; iron; acetic acid; triethylamine; In water;

DOI:10.1021/jm300833h

Reference yield: 25.0%

1-ethyl-2-pyrrolidinemethanamine (26116-12-1) + (Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid (1392139-32-0) → C23H23F2N3O2S (1392139-50-2)

Guidance literature:

(Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid; With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; In dichloromethane; at 23 ℃; for 0.0833333h;

1-ethyl-2-pyrrolidinemethanamine; In dichloromethane; for 15h;

DOI:10.1021/jm300833h

upstream raw materials:

3-nitro-4-fluorobenzoic acid

3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid

2,6-difluorobenzaldehyde

Downstream raw materials:

C₂₃H₂₃F₂N₃O₂S

Post a RFQ

Cas No.:

Product Name:

Quantity:

Please select Metric Ton KG G Pound L ML

Email:

Company name:

Valid Period:

Detailed Requirements:

• Sample
• MOQ
• GMP
• FDA
• Price
  FOB CIF CFR EXW
• Urgent purchase

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

Remove

Submit

1

What can I do for you?
Get Best Price

Get Best Price for 1392139-32-0 (Z)-2-(2,6-difluorobenzylidene)-3-oxo-3,4-dihydro-2H-benzo[b][1,4]thiazine-6-carboxylic acid

Send

Send

Metric Ton KG G Pound L ML

Send

Send