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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 225468Generated: November 1, 2026

Triethyl phosphonoacetate → Ethyl azepan-3-ylacetate hydrochloride

https://huagongshe.com/reaction/225468

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethyl phosphonoacetateHCID 13345—
ReactantSodium hydrideHCID 24758—
Reactant1-Benzylazepan-3-oneHCID 15152264—
ReactantHydrogen chloride-ethyl acetateHCID 21866389—
ReactantEthyl(1-benzylazepane-3-ylidene)acetateHCID 86619134—
ReactantHCID 178418361HCID 178418361—
CatalystHCID 178418390HCID 178418390—
SolventEthanolHCID 702—
SolventTetrahydrofuranHCID 8028—
ProductEthyl azepan-3-ylacetate hydrochlorideHCID 67196857—

Reaction Steps

Sodium hydride and 1-benzylazepane-3-one were added to a THF solution of ethyl diethoxyphosphorylacetate under ice cooling and stirred for two hours at room temperature to give a stereoisomeric mixture of ethyl(1-benzylazepane-3-ylidene)acetate. After the obtained stereoisomeric mixture of ethyl(1-benzylazepane-3-ylidene)acetate was processed with 4M HCl-EtOAc solution, EtOH and 10% palladium carbon were added and stirred for 15 hours at room temperature under the hydrogen atmosphere to give ethyl azepane-3-ylacetate hydrochloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07557112B2
Source datasetuspto-grants-2009_07
ORD IDord-558f13f39a3c4606846a96222559fbfa
Source noteuspto-grants-2009_07