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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1777024Generated: November 3, 2026

Hydrazine → 3-Bromo-4-chlorobenzhydrazide

https://huagongshe.com/reaction/1777024

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrazineHCID 9321—
ReactantMethyl 3-bromo-4-chlorobenzoateHCID 22352523—
SolventMethanolHCID 887—
Product3-Bromo-4-chlorobenzhydrazideHCID 273554125%

Reaction Conditions

Temperature70 °C

Reaction Steps

Methyl 3-bromo-4-chlorobenzoate (120 mg, 0.481 mmol) was added to hydrazine (23.12 mg, 0.721 mmol) in methanol (8 mL) and refluxed for 12 h at 70° C. Reaction was monitored by TLC. After completion of the reaction, the solvent was removed by vacuum and then compound was purified by column chromatography affording the title compound (30 mg). 1H NMR (400 MHz, CDCl3): δ 8.02 (d, 1H, J=1.6 Hz), 7.60 (dd, 1H, J=2.0 & 8.0 Hz), 7.52 (d, 1H, J=8.0 Hz). ESI-MS: 250.9 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09266838B2
Source datasetuspto-grants-2016_02
ORD IDord-c3f1201e4e2d4a6387b632193e58ef43
Source noteuspto-grants-2016_02