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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2228661Generated: November 1, 2026

Malonic Acid → HCID 70116357, compound

https://huagongshe.com/reaction/2228661

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMalonic AcidHCID 867—
ReactantPyrrolidineHCID 31268—
Reactant2-methoxy-3,5-dimethylbenzaldehydeHCID 4770430—
SolventWaterHCID 962—
SolventPyridineHCID 1049—
ProductHCID 70116357HCID 7011635781.4%

Reaction Steps

A solution of 2-methoxy-3,5-dimethylbenzaldehyde (9.40 g, 57.2 mmol), malonic acid (8.90 g, 85.8 mmol), and pyrrolidine (730 mg, 8.58 mmol) in pyridine (80 mL) was refluxed for 14 hours. This reaction mixture was poured in iced water and extracted with ethyl acetate. The extract was washed with 2N-hydrochloric acid, dried over MgSO4, and filtered. The filtrate was concentrated under reduced pressure to provide 9.60 g of the title compound. Yield 81%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06417213B2
Source datasetuspto-grants-2002_07
ORD IDord-c525618f4e084fe49ba452a5aa6e1d06
Source noteuspto-grants-2002_07