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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1017542Generated: November 1, 2026

Methanol → HCID 18915248, compound

https://huagongshe.com/reaction/1017542

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 numberUS06479501B2
Source datasetuspto-grants-2002_11
ORD IDord-d1ea8d8d0d9c422297089db43acf0088
Source noteuspto-grants-2002_11