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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1156359Generated: November 1, 2026

Ethanol → HCID 12852073, compound

https://huagongshe.com/reaction/1156359

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantFormaldehydeHCID 712—
Reactant2-Amino-N-{2-[4-(4-fluorobenzoyl)piperidin-1-yl]ethyl}benzene-1-carboximidic acidHCID 3018651—
CatalystSodium HydroxideHCID 14798—
SolventWaterHCID 962—
ProductHCID 12852073HCID 1285207350%

Reaction Steps

A mixture of 6.5 parts of 2-amino-N-[2-[4-(4-fluorobenzoyl)-1-piperidinyl]ethyl]benzamide, 0.5 parts of paraformaldehyde, 3 drops of sodium hydroxide solution 50%, 80 parts of ethanol and 10 parts of water is stirred and refluxed overnight. The reaction mixture is allowed to cool to room temperature while stirring. The precipitated product if filtered off, washed with ethanol and crystallized from 200 parts of ethanol, yielding 3.3 parts (50%) of 3-[2-[4-(4-fluorobenzoyl)-1-piperidinyl]ethyl]-2,3-dihydro-4(1H)-quinazolinone; mp. 203.4° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04335127
Source datasetuspto-grants-1982_06
ORD IDord-ad1ce023a24b4292acc31112460199ea
Source noteuspto-grants-1982_06