6,7-Dibromo-8-nitro-2,3-dihydrobenzo[1,4]dioxine-5-carboxylic acid

Base Information

• Chemical Name: 6,7-Dibromo-8-nitro-2,3-dihydrobenzo[1,4]dioxine-5-carboxylic acid
• CAS No.: 66411-18-5
• Molecular Formula: C9H5Br2NO6
• Molecular Weight: 382.95
• Hs Code.: 2932999099

Synonyms:6,7-Dibromo-8-nitro-2,3-dihydrobenzo[1,4]dioxine-5-carboxylic acid;6,7-Dibromo-8-nitro-2,3-dihydrobenzo-[b][1,4]dioxine-5-carboxylic acid

Chemical Property of 6,7-Dibromo-8-nitro-2,3-dihydrobenzo[1,4]dioxine-5-carboxylic acid

Chemical Property:

• PSA: 101.58000
• LogP: 3.11240
• Storage Temp.: 2-8°C

Purity/Quality:

97% ^*data from raw suppliers

6,7-Dibromo-8-nitro-2,3-dihydrobenzo-[b][1,4]dioxine-5-carboxylic acid 95+% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
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MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 6,7-Dibromo-8-nitro-2,3-dihydrobenzo[1,4]dioxine-5-carboxylic acid

There total 2 articles about 6,7-Dibromo-8-nitro-2,3-dihydrobenzo[1,4]dioxine-5-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: 93.0%

6,7-dibromo-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylic acid (66411-17-4) → 6,7-dibromo-8-nitro-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylic acid (66411-18-5)

Guidance literature:

With sulfuric acid; nitric acid; acetic acid; at 0 - 25 ℃; for 2h; Temperature;

Reference yield:

2,3-dihydro-1,4-benzodioxine-5-carboxylic acid (4442-53-9) → 6,7-dibromo-8-nitro-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylic acid (66411-18-5)

Guidance literature:

Multi-step reaction with 2 steps

1: bromine; acetic acid / 2 h / 120 °C

2: sulfuric acid; nitric acid / acetic acid / 1 h / 37 - 50 °C

With sulfuric acid; bromine; nitric acid; acetic acid; In acetic acid;

Reference yield: 83.7%

6,7-dibromo-8-nitro-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylic acid (66411-18-5) → 8-amino-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylic acid (66411-22-1)

Guidance literature:

With hydrogenchloride; In water;

upstream raw materials:

6,7-dibromo-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylic acid

2,3-dihydro-1,4-benzodioxine-5-carboxylic acid

Downstream raw materials:

8-amino-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylic acid

8-amino-7-chloro-2,3-dihydro-benzo[1,4]dioxine-5-carboxylic acid

methyl 8-amino-2,3-dihydrobenzo[b][1,4]dioxine-5-carboxylate

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