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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 622153Generated: October 31, 2026

Formaldehyde → HCID 21293847, compound

https://huagongshe.com/reaction/622153

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantCaprolactamHCID 7768—
ReactantPotassium CarbonateHCID 11430—
Reactant2H-Azepin-2-one, hexahydro-1-(hydroxymethyl)-HCID 83127—
ProductHCID 21293847HCID 21293847—

Reaction Conditions

Temperature50 °C

Reaction Steps

1,130 g (10.00 mol) of 6-caprolactam, 306.1 g (10.00 mol) of 98% purity paraformaldehyde and 6.91 g (0.05 mol) of ground K2CO3 were brought to reaction. Apart from the catalyst, a clear solution was present. After 2 hours, the mixture was cooled to 50° C.; a few grains of pure N-methylol-caprolactam were added as seed crystals. 1,428 g of methylolcaprolactam (=99.9% of the theoretical yield) were obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04769454
Source datasetuspto-grants-1988_09
ORD IDord-2e68a12907284739970f23999b270536
Source noteuspto-grants-1988_09