3-bromo-1-methyl-1H-indazole

Base Information

• Chemical Name: 3-bromo-1-methyl-1H-indazole
• CAS No.: 326474-67-3
• Molecular Formula: C8H7BrN2
• Molecular Weight: 211.061
• Hs Code.: 2933990090
• Mol file: 326474-67-3.mol

Synonyms:3-bromo-1-methyl-1H-indazole;N-Methyl-3-bromoindazole;3-Bromo-1-methylindazole 97%

Chemical Property of 3-bromo-1-methyl-1H-indazole

Chemical Property:

• Melting Point: 35-40°C
• Boiling Point: 293.6±13.0 °C(Predicted)
• PKA: -0.36±0.50(Predicted)
• Flash Point: >110℃
• PSA: 17.82000
• Density: 1.60±0.1 g/cm3(Predicted)
• LogP: 2.33580
• Storage Temp.: under inert gas (nitrogen or Argon) at 2–8 °C

Purity/Quality:

98%,99%, ^*data from raw suppliers

3-Bromo-1-methyl-1H-indazole ^*data from reagent suppliers

Safty Information:

• Hazard Codes: T
• Statements: 25
• Safety Statements: 45

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 3-bromo-1-methyl-1H-indazole

There total 6 articles about 3-bromo-1-methyl-1H-indazole 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: 85.0%

1-methyl-1H-indazole (13436-48-1) → 5-bromo-1-methyl-1H-indazole (465529-57-1) + 3-bromo-1-methyl-1H-indazole (326474-67-3)

Guidance literature:

With N-Bromosuccinimide; 2,4,6-trimethylaniline; In dichloromethane; at 0 ℃; for 6h; regioselective reaction; Inert atmosphere;

DOI:10.1002/chem.201502234

Reference yield: 55.0%

1-methyl-1H-indazole (13436-48-1) → 3-bromo-1-methyl-1H-indazole (326474-67-3)

Guidance literature:

With hydrogen bromide; dimethyl sulfoxide; In water; ethyl acetate; at 60 ℃; for 8h;

DOI:10.1021/acs.orglett.5b00932

Reference yield:

benzimidazole (271-44-3) → 3-bromo-1-methyl-1H-indazole (326474-67-3)

Guidance literature:

Multi-step reaction with 2 steps

1: NaOH-solution; sodium hypobromite solution

2: NaOH-solution

With sodium hydroxide; sodium hypobromide;

upstream raw materials:

3-bromo-1H-indazole

dimethyl sulfate

benzimidazole

1-methyl-1H-indazole

Downstream raw materials:

1-methyl-1H-indazole

3,5-Dibrom-1-methylindazol

1-methyl-3-phenethyl-1H-indazole

1‐methyl‐3‐phenyl‐1H‐indazole

Refernces

• 1、 Samanta, Ramesh C.,Yamamoto, Hisashi. "Selective Halogenation Using an Aniline Catalyst". supporting information. p. 11976 - 11979. Retrieved 2015/08/18.