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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1776579Generated: October 31, 2026

Hydrochloric Acid → HCID 838180, compound

https://huagongshe.com/reaction/1776579

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPyridineHCID 1049—
ReactantMethanesulfonyl chlorideHCID 31297—
ReactantMethyl 5-amino-2-hydroxybenzoateHCID 135127—
SolventWaterHCID 962—
SolventDichloromethaneHCID 6344—
ProductHCID 838180HCID 83818092.5%

Reaction Steps

To a solution of methyl 5-amino-2-hydroxybenzoate (9.58 g, 57.3 mmol) in DCM (150 ml), pyridine (9.27 ml, 115 mmol) was added followed by methanesulfonyl chloride (4.47 ml, 57.3 mmol). The reaction mixture was stirred at RT for 4 hours. Water (50 ml) and HCl 6M (15 ml) were added, and the resulting precipitate was collected by filtration, washed with water and dried to give methyl 2-hydroxy-5-(methylsulfonamido)benzoate (13 g, 53.0 mmol, 92% yield, MS/ESI+ 246.0 [MH]+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09265768B2
Source datasetuspto-grants-2016_02
ORD IDord-6e0aa20eb37e4c4381a69ab4902913b2
Source noteuspto-grants-2016_02