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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2052130Generated: November 2, 2026

Formic Acid → HCID 20378776, compound

https://huagongshe.com/reaction/2052130

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormic AcidHCID 284—
ReactantHydrochloric AcidHCID 313—
ReactantPhosphorus pentachlorideHCID 24819—
Reactantp-CyanobenzamideHCID 76427—
SolventCarbon TetrachlorideHCID 5943—
ProductHCID 20378776HCID 20378776—

Reaction Steps

A suspension of 18.1 g (0.12 mole) of 4-cyanobenzamide, 25.8 g (0.12 mole) of phosphorus pentachloride and 250 ml of AR carbon tetrachloride was stirred and heated at 70° until the HCl gas evolution had subsided; ca. 25 min. The solution was cooled to 30° and 5.9 g (0.12 mole) of 97% formic acid was added while maintaining a temperature of 30°. After stirring for 30 min., the product was collected, washed with AR carbon tetrachloride and dried to give 52 g, m.p. shrinks 162°-165°, darkens 218°, decomposes >300°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04182881
Source datasetuspto-grants-1980_01
ORD IDord-d718bb69953e4c0da6fbf93498be1588
Source noteuspto-grants-1980_01