ethyl 1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carboxylate

Base Information

• Chemical Name: ethyl 1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carboxylate
• CAS No.: 888739-61-5
• Molecular Formula: C₁₇H₁₈ClF₃N₂O₂
• Molecular Weight: 374.79
• Mol file: 888739-61-5.mol

Synonyms:ethyl 1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carboxylate

Chemical Property of ethyl 1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carboxylate

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of ethyl 1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carboxylate

There total 3 articles about ethyl 1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carboxylate 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: 42.0%

ethyl 3-isopropyl-1H-pyrazole-5-carboxylate (78208-72-7) + 2-chloro-1-(chloromethyl)-4-(trifluoromethyl)benzene (24096-63-7) → ethyl 1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carboxylate (888739-61-5)

Guidance literature:

With potassium carbonate; In N,N-dimethyl-formamide; at 0 - 30 ℃; for 15h;

Reference yield:

3-methyl-butan-2-one (563-80-4) → ethyl 1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carboxylate (888739-61-5)

Guidance literature:

Multi-step reaction with 3 steps

1: potassium tert-butylate / tetrahydrofuran / 16 h / 20 °C

2: hydrazine hydrate; acetic acid / tetrahydrofuran / 2 h / Reflux

3: potassium carbonate / N,N-dimethyl-formamide / 20 °C

With potassium tert-butylate; potassium carbonate; hydrazine hydrate; acetic acid; In tetrahydrofuran; N,N-dimethyl-formamide; 1: Claisen condensation;

DOI:10.1016/j.bmc.2011.12.008

Reference yield:

ethyl 2,4-dioxo-5-methylhexanoate (64195-85-3) → ethyl 1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carboxylate (888739-61-5)

Guidance literature:

Multi-step reaction with 2 steps

1: hydrazine hydrate; acetic acid / tetrahydrofuran / 2 h / Reflux

2: potassium carbonate / N,N-dimethyl-formamide / 20 °C

With potassium carbonate; hydrazine hydrate; acetic acid; In tetrahydrofuran; N,N-dimethyl-formamide;

DOI:10.1016/j.bmc.2011.12.008

upstream raw materials:

ethyl 3-isopropyl-1H-pyrazole-5-carboxylate

2-chloro-1-(chloromethyl)-4-(trifluoromethyl)benzene

3-methyl-butan-2-one

ethyl 2,4-dioxo-5-methylhexanoate

Downstream raw materials:

3-{1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazol-5-yl}-N-(pentylsulfonyl)propanamide

ethyl 3-{1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazol-5-yl}propanoate

ethyl (E)-3-{1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazol-5-yl}propenoate

1-[2-chloro-4-(trifluoromethyl)benzyl]-3-isopropyl-1H-pyrazole-5-carbaldehyde