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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 928402Generated: October 30, 2026

Benzyl Bromide → ethyl 1-benzyl-1H-pyrazole-4-carboxylate

https://huagongshe.com/reaction/928402

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzyl BromideHCID 7498—
ReactantPotassium CarbonateHCID 11430—
Reactantethyl 1H-pyrazole-4-carboxylateHCID 142179—
SolventAcetoneHCID 180—
Productethyl 1-benzyl-1H-pyrazole-4-carboxylateHCID 15237993—

Reaction Conditions

Temperature50 °C

Reaction Steps

Bromomethyl-benzene (610 mg, 3.57 mmol) was suspended in Acetone (25 ml), ethyl 1H-pyrazole-4-carboxylate (500 mg, 3.57 mmol) and K2CO3 (2465 mg, 17.84 mmol) were added. The suspension was stirred 16 h at 50° C. The reaction mixture was filtrated and evaporated in vacuum to give the title compound which was used for the next step without further purification. HPLC/MS (Method A) RtA=1.82 min, MS [M+H]+=230.9.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09290485B2
Source datasetuspto-grants-2016_03
ORD IDord-716679d359564f7ba9954bc592dabce4
Source noteuspto-grants-2016_03