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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1449389Generated: November 3, 2026

Thionyl Chloride → trans 3-Bromocinnamoyl chloride

https://huagongshe.com/reaction/1449389

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactantm-Bromocinnamic acidHCID 776461—
SolventBenzeneHCID 241—
Producttrans 3-Bromocinnamoyl chlorideHCID 1495910699%

Reaction Steps

A mixture of trans 3-bromocinnamic acid (m.p. 177°-179° C.; 11.4 g), thionyl chloride (11.9 g) and dry benzene (150 ml) was heated at reflux for 2 hours. Solvent and excess thionyl chloride were removed by distillation under reduced pressure leaving trans 3-bromocinnamoyl chloride (12.2 g), b.p. 100°-100.5° C./0.2 mm Hg.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04190674
Source datasetuspto-grants-1980_02
ORD IDord-0ca2dd6f06434b0f90213e6691495467
Source noteuspto-grants-1980_02