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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1277721Generated: November 1, 2026

Carbon Dioxide → CID 112285

https://huagongshe.com/reaction/1277721

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCarbon DioxideHCID 280—
ReactantMalonic AcidHCID 867—
ReactantPiperidineHCID 8082—
ReactantBenzaldehyde, 2-methoxy-5-nitro-HCID 90685—
SolventWaterHCID 962—
SolventPyridineHCID 1049—
ProductCID 112285HCID 112285—

Reaction Steps

Piperidine (1 ml) was added to a mixture of 2-methoxy-5-nitrobenzaldehyde (24 g) and malonic acid (30 g) in pyridine (about 60 ml). The mixture was warmed on a steam bath for 3 hours (slow evolution of carbon dioxide) and then poured into water (500 ml) when a yellow solid precipitated. The solid was removed by filtration and crystallized from ethanol (1 liter). The weight of the product was 20 grams.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04278748
Source datasetuspto-grants-1981_07
ORD IDord-bc51dc92e4b84cdc8632a37b56a90ab8
Source noteuspto-grants-1981_07