Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1098147Generated: October 29, 2026

Hydrochloric Acid → HCID 57438650, compound

https://huagongshe.com/reaction/1098147

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,4-DioxaneHCID 31275—
ReactantHCID 57438649HCID 57438649—
SolventDiethyl EtherHCID 3283—
SolventIsopropanolHCID 3776—
ProductHCID 57438650HCID 57438650100%

Reaction Steps

is Hydrogen chloride in dioxane (5.67 mL, 22.67 mmol) was added to a solution of di-tert-butyl 1-(2-methylpyridin-3-yl)hydrazine-1,2-dicarboxylate (Intermediate V1) (733 mg, 2.27 mmol) in IPA (10 mL). The reaction mixture was heated at reflux for 20 mins. The reaction mixture was allowed to cool and then diluted with diethyl ether (30 mL). The resultant precipitate was collected by filtration and dried in vacuo to afford 3-hydrazinyl-2-methylpyridine hydrochloride (362 mg, 100%). 1H NMR (400 MHz, DMSO) δ 2.66 (3H, s), 7.80-7.83 (1H, m), 7.95-7.97 (1H, m), 8.23-8.25 (1H, m), 9.15 (1H, s), 11.30 (1H, s); no ion in LCMS (1NH missing).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08143263B2
Source datasetuspto-grants-2012_03
ORD IDord-5f19772db3aa47d5acd3ef17adf120d8
Source noteuspto-grants-2012_03