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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 550785Generated: October 30, 2026

Triethyl phosphonoacetate → Ethyl azepan-3-ylacetate hydrochloride

https://huagongshe.com/reaction/550785

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—
CatalystPalladiumHCID 23938—
SolventEthanolHCID 702—
SolventTetrahydrofuranHCID 8028—
ProductEthyl azepan-3-ylacetate hydrochlorideHCID 67196857—

Reaction Steps

Sodium hydride and 1-benzylazepan-3-one were added to a THF solution of ethyl diethoxyphosphorylacetate with ice-cooling, and the mixture was stirred at ambient temperature for 2 hours to yield a stereoisomeric mixture of ethyl (1-benzylazepan-3-ylidene)acetate, which was treated with 4M HCl-EtOAc solution, followed by adding EtOH and 10% palladium on activated carbon and stirring under hydrogen atmosphere at ambient temperature for 15 hours to yield ethyl azepan-3-ylacetate hydrochloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07947690B2
Source datasetuspto-grants-2011_05
ORD IDord-7dba38f338db40d7bb67d72c3cb339d2
Source noteuspto-grants-2011_05