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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 264280Generated: October 25, 2026

Dichloromethane → 2(R)-[[4-methoxybenzenesulfonyl](3-picolyl)amino]-3-methyl-butanoic acid hydrochloride

https://huagongshe.com/reaction/264280

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDichloromethaneHCID 6344—
Reactantt-Butyl 2(R)-[[4-methoxybenzenesulfonyl](3-picolyl)amino]-3-methylbutanoateHCID 11797104—
Product2(R)-[[4-methoxybenzenesulfonyl](3-picolyl)amino]-3-methyl-butanoic acid hydrochlorideHCID 70061703—

Reaction Conditions

Temperature-10 °C

Reaction Steps

t-Butyl 2(R)-[[4-methoxybenzenesulfonyl](3-picolyl)amino]-3-methylbutanoate (5.3 g, 12.2 mmol) is dissolved in methylene chloride (150 mL) and cooled to -10° C. Hydrochloric acid gas is bubbled into the solution for 10 minutes. The reaction mixture is then sealed, warmed to room temperature and stirred for 4 hours. The solvent is then evaporated to provide 2(R)-[[4-methoxybenzenesulfonyl](3-picolyl)amino]-3-methyl-butanoic acid hydrochloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05646167
Source datasetuspto-grants-1997_07
ORD IDord-a3aff89067704164b900ff25c9c5c473
Source noteuspto-grants-1997_07