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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 986674Generated: October 30, 2026

6-Chloro-2,3-dihydrobenzoxazol-2-one → 2,5,7-Trichlorobenzoxazole

https://huagongshe.com/reaction/986674

Reaction equation

Participants

RoleNameHCIDCharge
Reactant6-Chloro-2,3-dihydrobenzoxazol-2-oneHCID 29858—
ReactantHCID 20157014HCID 20157014—
SolventTolueneHCID 1140—
Product2,5,7-TrichlorobenzoxazoleHCID 2015701368%

Reaction Steps

In analogy to Example 1, 204 g of 5,7-dichlorobenzoxazolin-2-one, in place of 6-Chlorobenzoxazolin-2-one, are reacted. 2,5,7-Trichlorobenzoxazole of melting point 140° -142° C. is obtained in a yield of 68% of theory by recrystallisation, from toluene or ligroin, of the residue remaining after distilling out the o-dichlorobenzene.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04714766
Source datasetuspto-grants-1987_12
ORD IDord-ddcac2b0adda4277ac343b1ccefef33e
Source noteuspto-grants-1987_12