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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1685219Generated: November 2, 2026

Water → HCID 178429275, compound

https://huagongshe.com/reaction/1685219

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantMethyl acetoacetateHCID 7757—
Reactant5-Amino-1H-pyrazol-3-olHCID 96221—
SolventHydrochloric AcidHCID 313—
ProductHCID 178429275HCID 178429275—

Reaction Steps

20 g (201.8 mmol) of 5-amino-2H-pyrazol-3-ol and 26 g (224 mmol) of methyl 3-oxo-butyrate were heated under reflux in 63 ml of conc. hydrochloric acid and 17 ml of water for 1 h. After cooling, the product crystallized and was filtered off with suction and dried. Yield: 16.54 g (50%), M+H+: 166.07.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08148395B2
Source datasetuspto-grants-2012_04
ORD IDord-cddf479efdec40a09138557cb50cfbfc
Source noteuspto-grants-2012_04