1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester

Base Information

• Chemical Name: 1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester
• CAS No.: 1354060-39-1
• Molecular Formula: C₂₁H₂₀Cl₂N₂O₃
• Molecular Weight: 419.307
• Mol file: 1354060-39-1.mol

Synonyms:1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester

Chemical Property of 1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester

There total 3 articles about 1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl 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: 71.0%

1-(5-chloro-2-hydroxybenzyl)-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester (851205-62-4) + 4-chlorobenzyl bromide (622-95-7) → 1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester (1354060-39-1)

Guidance literature:

With potassium carbonate; potassium iodide; In N,N-dimethyl-formamide; at 100 ℃;

Reference yield:

5-chlorosalicyclaldehyde (635-93-8) → 1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester (1354060-39-1)

Guidance literature:

Multi-step reaction with 3 steps

1.1: acetic acid / dichloromethane / 0.5 h / 20 °C / Inert atmosphere

1.2: 20 °C

2.1: trifluoroacetic acid / dichloromethane / 20 °C

2.2: 17 h / 20 °C / Reflux

3.1: potassium carbonate; potassium iodide / N,N-dimethyl-formamide / 100 °C

With potassium carbonate; acetic acid; trifluoroacetic acid; potassium iodide; In dichloromethane; N,N-dimethyl-formamide;

Reference yield:

N'-(5-chloro-2-hydroxybenzyl)hydrazinecarboxylic acid tert-butyl ester (913566-75-3) → 1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester (1354060-39-1)

Guidance literature:

Multi-step reaction with 2 steps

1.1: trifluoroacetic acid / dichloromethane / 20 °C

1.2: 17 h / 20 °C / Reflux

2.1: potassium carbonate; potassium iodide / N,N-dimethyl-formamide / 100 °C

With potassium carbonate; trifluoroacetic acid; potassium iodide; In dichloromethane; N,N-dimethyl-formamide;

upstream raw materials:

5-chlorosalicyclaldehyde

1-(5-chloro-2-hydroxybenzyl)-5-methyl-1H-pyrazole-3-carboxylic acid ethyl ester

4-chlorobenzyl bromide

N'-(5-chloro-2-hydroxybenzyl)hydrazinecarboxylic acid tert-butyl ester

Downstream raw materials:

{1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazol-3-yl}-methanol

1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazole-3-carbaldehyde

(E)-3-{1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazol-3-yl}-acrylic acid methyl ester

3-{1-[5-chloro-2-(4-chloro-benzyloxy)-benzyl]-5-methyl-1H-pyrazol-3-yl}-propionic acid methyl ester