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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 733719Generated: October 29, 2026

Methanesulfonic Acid → HCID 44475509, compound

https://huagongshe.com/reaction/733719

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanesulfonic AcidHCID 6395—
Reactant3-ChloroanilineHCID 7932—
ReactantMethyl 4-chloro-1-methyl-1H-pyrrolo(3,2-c)pyridine-7-carboxylateHCID 44475508—
SolventMethanolHCID 887—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 44475509HCID 44475509—

Reaction Steps

4-Chloro-1-methyl-1H-pyrrolo[3,2-c]pyridine-7-carboxylic acid methyl ester (1.04 g), 3-chloroaniline (0.97 ml) and methanesulfonic acid (0.60 ml) in 1,4-dioxan (10 ml) were irradiated at 180° C. for 30 minutes with microwaves. The solid mass obtained was dissolved in methanol and the solvent evaporated. The residue was dissolved in ethyl acetate and washed with water followed by saturated brine solution then dried (MgSO4)), filtered and evaporated to yield a brown oil (1.6 g). The brown oil was purified by column chromatography on a Biotage® 40M column eluting in 20% ethyl acetate/iso-hexane, to give the title compound as an off-white solid (0.62 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07589206B2
Source datasetuspto-grants-2009_09
ORD IDord-8cdba128dd224629bef68f6fd5b6e9a4
Source noteuspto-grants-2009_09