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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2268149Generated: October 30, 2026

Triethyloxonium tetrafluoroborate → 1H-PYRAZOLO[3,4-C]PYRIDINE, 1-CYCLOPENTYL-7-ETHOXY-3-ETHYL-4,5-DIHYDRO-

https://huagongshe.com/reaction/2268149

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethyloxonium tetrafluoroborateHCID 2723982—
Reactant1-Cyclopentyl-3-ethyl-1,4,5,6-tetrahydro-7H-pyrazolo[3,4-c]pyridin-7-oneHCID 10823542—
SolventDichloromethaneHCID 6344—
Product1H-PYRAZOLO[3,4-C]PYRIDINE, 1-CYCLOPENTYL-7-ETHOXY-3-ETHYL-4,5-DIHYDRO-HCID 9845751—

Reaction Steps

esterifying said lactam compound of Formula (9.0.0) using triethyloxonium tetrafluoroborate, (CH3CH2)2OBF4; wherein a reaction mixture is established by slowly adding a solution of triethyloxonium tetrafluoroborate, (CH3CH2)3OBF4 in methylene chloride to a suspension of said lactam compound of Formula (9.0.0) in methylene chloride over a period of 40 minutes; and thereafter, maintaining said reaction mixture at a temperature of from 18° to 22° C., for a period of 21 hours; whereby there is produced a corresponding imino ester (imidate) compound of Formula (10.0.0):

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06326495B2
Source datasetuspto-grants-2001_12
ORD IDord-4c211279218b471ca5b8a8f55e4ad5b4
Source noteuspto-grants-2001_12