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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1613269Generated: November 2, 2026

Pyridine → HCID 14852021, compound

https://huagongshe.com/reaction/1613269

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantEthyl AcetateHCID 8857—
Reactant4-Chlorobutyryl chlorideHCID 78370—
Reactant4-Amino-2,6-di-tert-butylphenolHCID 314220—
SolventDiethyl EtherHCID 3283—
ProductHCID 14852021HCID 1485202178.2%

Reaction Conditions

Temperature3 °C

Reaction Steps

To a stirred mixture of 65.2 g (295 mmol) of 3,5-di-tert-butyl-4-hydroxyaniline and 23.3 g (295 mmol) of pyridine in 700 ml of ether cooled to 3° C. there was slowly added 41.6 g (295 mmol) of 4-chlorobutyryl chloride. Fifteen hours later 700 ml of ethyl acetate was added and the mixture was washed successively with 500 ml of water, 500 ml of dilute sodium bicarbonate solution and again with 500 ml of water. The organic phase was dried over anhydrous magnesium sulfate and concentrated to a solid (85.3 g). This solid was triturated in hexane and filtered to yield 75.2 g of N-(3,5-di-tert-butyl-4-hydroxyphenyl)-4-chlorobutyramide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05192791
Source datasetuspto-grants-1993_03
ORD IDord-a751059130b14981a63e4174f71142b2
Source noteuspto-grants-1993_03