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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1930652Generated: October 29, 2026

Hydrochloric Acid → 2-(Benzyl(2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amino)ethanol

https://huagongshe.com/reaction/1930652

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactanttert-Butyl 4-(benzyl(2-hydroxyethyl)amino)-2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylateHCID 59333735—
SolventMethanolHCID 887—
Product2-(Benzyl(2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amino)ethanolHCID 59333739—

Reaction Conditions

Temperature75 °C

Reaction Steps

tert-Butyl 4-(benzyl(2-hydroxyethyl)amino)-2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate (121 mg, 0.22 mmol) was dissolved methanol (2 mL). Hydrochloric acid (0.018 mL, 0.22 mmol) was added and the reaction was stirred at 75° C. for 1 h. The solvent was evaporated under reduced pressure and the crude 2-(benzyl(2-(4-(2-methyl-1H-imidazol-1-yl)phenylamino)-5,6,7,8-tetrahydropyrido[4,3-d]pyrimidin-4-yl)amino)ethanol (95 mg, 96%) was used as such in the subsequent step. MS (ES+) m/z 456.3 (M+H)+

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08188101B2
Source datasetuspto-grants-2012_05
ORD IDord-5ce6cebb8fb94b5d89c93d13bb13941a
Source noteuspto-grants-2012_05