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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1995835Generated: October 30, 2026

3,4,5,6-Tetrahydrophthalic anhydride → HCID 20486113, compound

https://huagongshe.com/reaction/1995835

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3,4,5,6-Tetrahydrophthalic anhydrideHCID 12475—
Reactant6-[2-(4-Chlorophenyl)ethoxy]pyridin-3-amineHCID 20486085—
SolventAcetic AcidHCID 176—
ProductHCID 20486113HCID 20486113—

Reaction Steps

A mixture of 3,4,5,6-tetrahydrophthalic anhydride (0.4 g), 5-amino-2-(4-chlorophenethoxy)pyridine (0.6 g) and acetic acid (20 ml) is heated to reflux. After about 1.5 hours, the reaction is cooled and concentrated to about one-half volume. On standing, a crystalline solid precipitates which is collected by filtration and washed with 10% ethyl acetate/hexane to yield N-[2-(4-chlorophenethoxy)-5-pyridyl]-3,4,5,6-tetrahydrophthalimide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04406689
Source datasetuspto-grants-1983_09
ORD IDord-dde3b247bfd249cb84fa4ae6bfe2ddf7
Source noteuspto-grants-1983_09