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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1160409Generated: October 30, 2026

1,1-dimethylethyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-(ethylamino)butanoate → Methyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-(ethylamino)butanoate, hydrochloride

https://huagongshe.com/reaction/1160409

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,1-dimethylethyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-(ethylamino)butanoateHCID 59516237—
SolventMethanolHCID 887—
Solvent1,4-Dioxane hydrochlorideHCID 20443148—
ProductMethyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-(ethylamino)butanoate, hydrochlorideHCID 131728380—

Reaction Conditions

Temperature60 °C

Reaction Steps

The 1,1-dimethylethyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-(ethylamino)butanoate from the previous step was dissolved in a mixture of MeOH (150 mL) and 4N HCl/dioxane (20 mL) and heated to 60° C. for 3 h. The solvents were concentrated to a slurry, Et2O (200 mL) was added, the solid filtered, washed well with Et2O to give the titled compound (4.0 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07816395B2
Source datasetuspto-grants-2010_10
ORD IDord-ea6e3809411e4da881332af4080c6ea7
Source noteuspto-grants-2010_10