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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 37354Generated: October 25, 2026

Phthalic Anhydride → 2-[(8-chlorodibenz[b,f][1,4]oxazepin-10(11H)-yl)carbonyl]benzoic acid

https://huagongshe.com/reaction/37354

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhthalic AnhydrideHCID 6811—
Reactant8-Chloro-dibenz[b,f]-[1,4]oxazepineHCID 838267—
SolventTetrahydrofuranHCID 8028—
Product2-[(8-chlorodibenz[b,f][1,4]oxazepin-10(11H)-yl)carbonyl]benzoic acidHCID 1578065770.3%

Reaction Steps

A stirred mixture of 8-chloro-dibenz[b,f]-[1,4]oxazepine (3.35 g) and phthalic anhydride (2.13 g) in THF (40 mL) was heated to reflux for 4 days. The mixture was concentrated and the residue was triturated with ether. The precipitated solid was filtered to give the title compound as a white solid (3.84 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05420270
Source datasetuspto-grants-1995_05
ORD IDord-8e88240b57da42d69ecdb18994186b06
Source noteuspto-grants-1995_05