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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1198831Generated: November 3, 2026

Water → HCID 15041730, compound

https://huagongshe.com/reaction/1198831

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPotassium HydroxideHCID 14797—
ReactantHCID 19867348HCID 19867348—
SolventDiethylene GlycolHCID 8117—
ProductHCID 15041730HCID 1504173044.3%

Reaction Conditions

Temperature170 °C

Reaction Steps

A solution of 2.24 g of propyl p-(5-pentyl-2-pyridyl)phenylcarbamate in 186 ml of diethylene glycol was treated with 26 ml of potassium hydroxide and 47 ml of water and heated at 170° C. under nitrogen. After 1.75 hours the reaction mixture was cooled, poured into 250 ml of water and extracted with methylene chloride. The organic phase was dried over sodium sulphate, filtered and freed from solvent on a rotary evaporator under a vacuum. Purification of the residue (1.39 g) by chromatography on 60 g of silica gel with 1.5 l of methylene chloride and 0.5 l of methylene chloride/ethyl acetate (vol. 4:1) and subsequent recrystallization from methylene chloride/hexane gave 0.731 g of p-(5-pentyl-2-pyridyl)aniline as yellowish crystals; m.p. 60.3°-61.3° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04898455
Source datasetuspto-grants-1990_02
ORD IDord-4bf6796a407048b3ad963ba0e73d4f14
Source noteuspto-grants-1990_02