ethyl 3-(4-((tert-butyldimethylsilyl)oxy)phenyl)-1H-pyrazole-5-carboxylate

Base Information

Chemical Name:ethyl 3-(4-((tert-butyldimethylsilyl)oxy)phenyl)-1H-pyrazole-5-carboxylate
CAS No.:1609173-93-4
Molecular Formula:C₁₈H₂₆N₂O₃Si
Molecular Weight:346.502
Hs Code.:

Synonyms:ethyl 3-(4-((tert-butyldimethylsilyl)oxy)phenyl)-1H-pyrazole-5-carboxylate

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Chemical Property of ethyl 3-(4-((tert-butyldimethylsilyl)oxy)phenyl)-1H-pyrazole-5-carboxylate

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Technology Process of ethyl 3-(4-((tert-butyldimethylsilyl)oxy)phenyl)-1H-pyrazole-5-carboxylate

There total 4 articles about ethyl 3-(4-((tert-butyldimethylsilyl)oxy)phenyl)-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: 87.0%

: 95-92-1
oxalic acid diethyl ester

: 149683-53-4
4-(tert-butyldimethylsilyloxy)acetophenone

: 1609173-93-4
ethyl 3-(4-((tert-butyldimethylsilyl)oxy)phenyl)-1H-pyrazole-5-carboxylate

Guidance literature:: 4-(tert-butyldimethylsilyloxy)acetophenone; With lithium hexamethyldisilazane; In tetrahydrofuran; at 0 ℃; for 1h;

oxalic acid diethyl ester; In tetrahydrofuran; at 20 ℃; for 1h;

With hydrazine hydrate; acetic acid; at 20 ℃; for 3h;
DOI:10.1016/j.ejmech.2014.03.072

Reference yield: 78.0%

: ethyl 4-(4-((tert-butyldimethylsilyl)oxy)phenyl)-2,4-dioxobutanoate

: 1609173-93-4
ethyl 3-(4-((tert-butyldimethylsilyl)oxy)phenyl)-1H-pyrazole-5-carboxylate

Guidance literature:: With hydrazine hydrate; acetic acid; at 20 ℃; for 3h;

Reference yield:

: 99-93-4
4-Hydroxyacetophenone

: 1609173-93-4
ethyl 3-(4-((tert-butyldimethylsilyl)oxy)phenyl)-1H-pyrazole-5-carboxylate

Guidance literature:: Multi-step reaction with 2 steps

1.1: 1H-imidazole / N,N-dimethyl-formamide / 20 °C

2.1: lithium hexamethyldisilazane / tetrahydrofuran / 1 h / 0 °C

2.2: 1 h / 20 °C

2.3: 3 h / 20 °C

With 1H-imidazole; lithium hexamethyldisilazane; In tetrahydrofuran; N,N-dimethyl-formamide;
DOI:10.1016/j.ejmech.2014.03.072