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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1252284Generated: November 1, 2026

Acetic Anhydride → HCID 5244318, compound

https://huagongshe.com/reaction/1252284

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AnhydrideHCID 7918—
ReactantEthyl 4-chloroacetoacetateHCID 69484—
ReactantEthylorthoformateHCID 53630039—
ProductHCID 5244318HCID 524431890.3%

Reaction Steps

10 g (60.7 mM) of ethyl 4-chloroacetoacetate, 18 g (121 mM) of ethyl orthoformate and 25 g (245 mM) of acetic anhydride were stirred at 110° C. for 3 hours. Then, excessive ethyl orthoformate and acetic anhydride were distilled off under vacuum and the residue was recrystallized from hexane to obtain 12.1 g of a needle-like crystal with an yield of 90%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04742165
Source datasetuspto-grants-1988_05
ORD IDord-a8fb965cdfba455998b9b8025f062a16
Source noteuspto-grants-1988_05