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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1981098Generated: November 2, 2026

Acetic Anhydride → 9-Acetoxy-3,4-diazatricyclo[4,2,1,02,5]nona-3,7-diene

https://huagongshe.com/reaction/1981098

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AnhydrideHCID 7918—
ReactantTriethylamineHCID 8471—
ReactantHCID 70539013HCID 70539013—
SolventDiethyl EtherHCID 3283—
Product9-Acetoxy-3,4-diazatricyclo[4,2,1,02,5]nona-3,7-dieneHCID 86740028—

Reaction Steps

5 parts of 9-hydroxy-3,4-diazatricyclo[4,2,1,02,5 ]nona-3,7-diene, 5 parts of acetic anhydride, 1 part of triethylamine and 100 parts of ether were refluxed for 24 hours, after which the reaction mixture was extracted twice with 50 parts of water, and the organic phase was dried with MgSO4 and evaporated down in a rotary evaporator to give 6.2 parts (95 mole %) of 9-acetoxy-3,4-diazatricyclo[4,2,1,02,5 ]nona-3,7-diene of melting point 58° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04512795
Source datasetuspto-grants-1985_04
ORD IDord-37b2695f948348a188a8a1879465d1f0
Source noteuspto-grants-1985_04