Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1005276Generated: October 26, 2026

Bromine → alpha-Bromo-4-chlorobenzaldehyde methylhydrazone

https://huagongshe.com/reaction/1005276

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBromineHCID 24408—
Reactant4-Chlorobenzaldehyde (N-methyl)hydrazoneHCID 68148442—
SolventAcetic AcidHCID 176—
SolventAcetonitrileHCID 6342—
Productalpha-Bromo-4-chlorobenzaldehyde methylhydrazoneHCID 7347226061%

Reaction Steps

9.5 g (0.06 mol) of bromine were added dropwise at (-5) to (-7)° C. to a solution of 10 g (0.06 mol) of 4-chlorobenzaldehyde (N-methyl)hydrazone in 50 ml of acetic acid and 20 ml of acetonitrile. After the mixture had been stirred for 3 hours, the product which had precipitated was separated off and washed with a small amount of pentane. Yield: 61%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06054412
Source datasetuspto-grants-2000_04
ORD IDord-61497503c07b43a39eacfd88e033d612
Source noteuspto-grants-2000_04