2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid tert-butyl ester

Base Information

Chemical Name:2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid tert-butyl ester
CAS No.:692259-13-5
Molecular Formula:C₁₇H₂₀N₂O₄
Molecular Weight:316.357
Hs Code.:

Synonyms:2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid tert-butyl ester

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Chemical Property of 2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid tert-butyl ester

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Technology Process of 2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid tert-butyl ester

There total 4 articles about 2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid tert-butyl 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:

: 507-19-7
t-butyl bromide

: 692259-06-6
2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid

: 692259-13-5
2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid tert-butyl ester

Guidance literature:: With N-benzyl-N,N,N-triethylammonium chloride; potassium carbonate; In N,N-dimethyl-formamide; at 55 ℃; for 24h;
DOI:10.1021/jm031104y

Reference yield:

: 70-11-1
α-bromoacetophenone

: 692259-13-5
2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid tert-butyl ester

Guidance literature:: Multi-step reaction with 3 steps

1.1: NaH / dimethylformamide / 1.5 h / 0 - 20 °C

1.2: 70 percent / dimethylformamide / 18 h / 20 °C

2.1: 96 percent / aq. LiOH / tetrahydrofuran; methanol / 1 h / 20 °C

3.1: BTEAC; K₂CO₃ / dimethylformamide / 24 h / 55 °C

With lithium hydroxide; N-benzyl-N,N,N-triethylammonium chloride; sodium hydride; potassium carbonate; In tetrahydrofuran; methanol; N,N-dimethyl-formamide;
DOI:10.1021/jm031104y

Reference yield:

: 52867-42-2
5-hydroxy-2-methyl-2H-pyrazole-3-carboxylic acid methyl ester

: 692259-13-5
2-methyl-5-(2-oxo-2-phenylethoxy)-2H-pyrazole-3-carboxylic acid tert-butyl ester

Guidance literature:: Multi-step reaction with 3 steps

1.1: NaH / dimethylformamide / 1.5 h / 0 - 20 °C

1.2: 70 percent / dimethylformamide / 18 h / 20 °C

2.1: 96 percent / aq. LiOH / tetrahydrofuran; methanol / 1 h / 20 °C

3.1: BTEAC; K₂CO₃ / dimethylformamide / 24 h / 55 °C

With lithium hydroxide; N-benzyl-N,N,N-triethylammonium chloride; sodium hydride; potassium carbonate; In tetrahydrofuran; methanol; N,N-dimethyl-formamide;
DOI:10.1021/jm031104y