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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 659092Generated: October 29, 2026

1,4-Dioxa-8-azaspiro(4.5)decane → 8-[(2,6-Dimethoxyphenyl)methyl]-1,4-dioxa-8-azaspiro[4.5]decane

https://huagongshe.com/reaction/659092

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,4-Dioxa-8-azaspiro(4.5)decaneHCID 67435—
Reactant2,6-DimethoxybenzaldehydeHCID 96404—
ReactantHCID 178418361HCID 178418361—
CatalystPalladiumHCID 23938—
SolventMethanolHCID 887—
Product8-[(2,6-Dimethoxyphenyl)methyl]-1,4-dioxa-8-azaspiro[4.5]decaneHCID 68949919105.1%

Reaction Steps

A mixture of 1,4-dioxa-8-azaspiro[4,5]decane (19 mL, 0.146 mol), 2,6-dimethoxybenzaldehyde (26.7 g) and 10% Pd/C (wet, 4 g) in methanol (150 mL) was treated with hydrogen (50 psi) for 16 h. The reaction mixture was then filtered and concentrated to give 45 g of the title intermediate as a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08080565B2
Source datasetuspto-grants-2011_12
ORD IDord-07cf94c060854daf8ea8b643db1d645e
Source noteuspto-grants-2011_12