5-PYRIDIN-4-YL-1(2)H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER

Base Information

• Chemical Name: 5-PYRIDIN-4-YL-1(2)H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER
• CAS No.: 19959-81-0
• Molecular Formula: C11H11 N3 O2
• Molecular Weight: 217.22
• Hs Code.: 2933990090
• Mol file: 19959-81-0.mol

Synonyms:5-PYRIDIN-4-YL-1(2)H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER;5-PYRIDIN-4-YL-1H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER;ETHYL 5-PYRIDIN-4-YL-1H-PYRAZOLE-3-CARBOXYLATE

Chemical Property of 5-PYRIDIN-4-YL-1(2)H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER

Chemical Property:

• Vapor Pressure: 5.63E-08mmHg at 25°C
• Boiling Point: 441°C at 760 mmHg
• Flash Point: 220.5°C
• PSA: 67.87000
• Density: 1.249g/cm³
• LogP: 1.64840

Purity/Quality:

97% ^*data from raw suppliers

5-PYRIDIN-4-YL-1(2)H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER 95% ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of 5-PYRIDIN-4-YL-1(2)H-PYRAZOLE-3-CARBOXYLIC ACID ETHYL ESTER

There total 6 articles about 5-PYRIDIN-4-YL-1(2)H-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: 91.0%

lithium (1Z)-4-ethoxy-3,4-dioxo-1-pyridin-4-ylbut-1-en-1-olate (723339-43-3) → 3-(4-pyridinyl)-1H-pyrazole-5-carboxylic acid ethyl ester (19959-81-0)

Guidance literature:

With hydrazine hydrochloride; In ethanol; at 20 - 80.5 ℃; Inert atmosphere;

Reference yield: 87.0%

ethyl 2,4-dioxo-4-(pyridin-4-yl)butanoate (60943-41-1) → 3-(4-pyridinyl)-1H-pyrazole-5-carboxylic acid ethyl ester (19959-81-0)

Guidance literature:

With hydrazine hydrate; acetic acid; at 0 - 25 ℃; for 15h;

DOI:10.1016/j.bmcl.2016.10.075

Reference yield: 85.0%

methyl 2,4-dioxo-4-(pyridin-4-yl)butanoate (374063-91-9) → 3-(4-pyridinyl)-1H-pyrazole-5-carboxylic acid ethyl ester (19959-81-0)

Guidance literature:

With hydrazine hydrate; acetic acid; at 20 ℃; for 6h;

DOI:10.1016/j.molstruc.2019.02.095

upstream raw materials:

ethyl 2,4-dioxo-4-(pyridin-4-yl)butanoate

lithium (1Z)-4-ethoxy-3,4-dioxo-1-pyridin-4-ylbut-1-en-1-olate

diazoacetic acid ethyl ester

4-pyridylacetylene

Downstream raw materials:

3-(pyridin-4-yl)-1H-pyrazole-5-carboxylic acid