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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1702696Generated: November 1, 2026

Pyridine → HCID 20525731, compound

https://huagongshe.com/reaction/1702696

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantDichloromethaneHCID 6344—
ReactantThionyl ChlorideHCID 24386—
Reactant3-Amino-1,2-propanediolHCID 73561—
ReactantHCID 70544527HCID 70544527—
Catalyst4-(Dimethylamino)pyridineHCID 14284—
Solvent1,2-DimethoxyethaneHCID 8071—
ProductHCID 20525731HCID 20525731—

Reaction Steps

A slurry of 8.0 g. of 4-(hexadecylamino)phenylacetic acid hydrochloride in 175 ml. of methylene chloride and 50 ml. of glyme containing 10 ml. of thionyl chloride is heated at reflux for 2 hours. The clear solution is concentrated in vacuo giving 9.5 g. of an amber oil. This oil is dilutd with 50 ml. of pyridine containing 0.1 g. of 4-dimethylaminopyridine and 9.1 g. of 3-amino-1,2-propanediol. The reaction is stirred for two days at room temperature. The solution is partitioned between ether and water. The water phase is extracted twice more with 100 ml. of chloroform and ether. The combined organic layer is extracted with water, dried over magnesium sulfate and evaporated to a tacky solid. The solid is recrystallized from acetone-water and then from benzene.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04348399
Source datasetuspto-grants-1982_09
ORD IDord-0e2afd7a7e754c7ea28e8d87768a97bf
Source noteuspto-grants-1982_09