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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1976817Generated: November 2, 2026

Methanol → HCID 18915248, compound

https://huagongshe.com/reaction/1976817

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
ReactantN-methyl-N-phenyl-hydrazineHCID 36299—
Reactant8-Azaspiro[4.5]decan-1-one hydrochlorideHCID 18403965—
SolventHydrochloric AcidHCID 313—
ProductHCID 18915248HCID 1891524897.5%

Reaction Steps

A solution of 8-azaspiro[4,5]decane-1-one hydrochloride (5.2 g) in 95% ethanolic hydrochloric acid (30 ml) and 1-methyl-1-phenylhydrazine (5 g) was heated overnight on a steam bath, under nitrogen. The reaction mixture was cooled to ambient temperature, methanol was added and the mixture was concentrated in vacuo. The residue was flash chromatographed (silica gel) eluting with 10% methanol/dichloromethane. The appropriate fractions were collected and concentrated to afford 7.4 g (95%) of product, mp>270° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06229014B1
Source datasetuspto-grants-2001_05
ORD IDord-7c6ca3238fa449718c0b6d1e83f4acc9
Source noteuspto-grants-2001_05