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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1476801Generated: October 30, 2026

Methanol → Methyl isoquinoline-1-carboxylate

https://huagongshe.com/reaction/1476801

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantSulfuric AcidHCID 1118—
ReactantIsoquinoline-1-carboxylic acidHCID 68092—
ProductMethyl isoquinoline-1-carboxylateHCID 21196988100%

Reaction Conditions

Temperature65 °C

Reaction Steps

To a solution of isoquinoline-1-carboxylic acid (10 g, 57.74 mmol) in MeOH (150 mL) was added concentrated sulfuric acid (15 mL) at 0° C. The mixture was warmed to 65° C. and stirred at 65° C. for 24 hours. After cooling to RT, the reaction mixture was partitioned between DCM and saturated aqueous NaHCO3. The organic layer was separated and dried over Na2SO4, and the solvent was evaporated under reduced pressure to give the title compound as a yellow oil (11.2 g, 100%). ESI-MS m/z [M+H]+ 188.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09402841B2
Source datasetuspto-grants-2016_08
ORD IDord-2bd7185ff6454d73b20c453da78c13a4
Source noteuspto-grants-2016_08