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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 979927Generated: October 29, 2026

Benzene → HCID 20222923, compound

https://huagongshe.com/reaction/979927

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzeneHCID 241—
Reactant1,2-DibromoethaneHCID 7839—
Reactant1-ethyl-1,2-dihydro-5H-tetrazol-5-oneHCID 135472943—
CatalystHCID 178418647HCID 178418647—
SolventWaterHCID 962—
ProductHCID 20222923HCID 2022292340%

Reaction Steps

A mixture of 57 parts of 1-ethyl-1,4-dihydro-5H-tetrazol-5one, 69 parts of 1,2-dibromoethane, 564 parts of silver carbonate and 900 parts of benzene was stirred and refluxed over weekend using a water separator (in the darkness). The whole was filtered off over Hyflo while hot, washed with trichloromethane and the filtrate was evaporated to dry. The residue was purified by column chromatography over silica gel using trichloromethane as eluent. The second fraction was collected and the eluent was evaporated, yielding 22.3 parts (40%) of 5-(2-bromoethoxy)-1-ethyl-1H-tetrazole (200).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04634704
Source datasetuspto-grants-1987_01
ORD IDord-15658a642ce44120aa8138893167b7d4
Source noteuspto-grants-1987_01