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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 372805Generated: October 30, 2026

Formaldehyde → HCID 22758150, compound

https://huagongshe.com/reaction/372805

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
Reactant2-[2-(2,3-Dihydro-1H-inden-1-yl)ethyl]piperidineHCID 22758154—
SolventFormic AcidHCID 284—
ProductHCID 22758150HCID 22758150—

Reaction Steps

45 g. of 1-[2-(2-piperidyl)ethyl]indane prepared as described above is mixed with 100 ml. of 37% formalin and 200 ml. of 98% formic acid is added while swirling and the solution is then heated overnight on a steam bath. The reaction mixture is worked up by concentrating in vacuo, dissolving in water, filtering, basification and extraction with ether. The ether extracts are dried over potassium hydroxide and after removal of the ether, the product is distilled collecting 42.6 g. (88%), N-methyl-1-[2-(2-piperidyl)ethyl]indane, boiling point 128°-130° C/0.2 mm.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04092318
Source datasetuspto-grants-1978_05
ORD IDord-6185fd43e70c49a7b5b72ff9479ed937
Source noteuspto-grants-1978_05