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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 19734Generated: October 29, 2026

Hydrochloric Acid → 6,7-dihydro-5H-cyclopenta[b]pyridine-6-carboxylic acid hydrochloride

https://huagongshe.com/reaction/19734

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantDiethyl 5H-Cyclopenta[b]pyridine-6,6(7H)-dicarboxylateHCID 21260369—
Product6,7-dihydro-5H-cyclopenta[b]pyridine-6-carboxylic acid hydrochlorideHCID 68562899—

Reaction Steps

5,7-Dihydro-[1]pyrindine-6,6-dicarboxylic acid diethyl ester (0.953 g, 3.62 mmol) is taken into concentrated hydrochloric acid, heated to reflux for 4 hours and evaporated to afford 6,7-dihydro-5H-[1]pyrindine-6-carboxylic acid hydrochloride. δc (DMSO-d6) 33.9 (t), 34.5 (t) 41.2 (d), 124.8 (d), 140.1 (d), 140.8 (d), 141.2 (s), 158.4 (s), 175.2 (s).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07745462B2
Source datasetuspto-grants-2010_06
ORD IDord-d044b15e3bc640e38db51ed53b337563
Source noteuspto-grants-2010_06