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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1820516Generated: October 31, 2026

1,4-Dioxa-8-azaspiro(4.5)decane → (1,4-Dioxa-8-aza-spiro[4.5]dec-8-yl)-[5-(4-isopropyl-piperazine-1-carbonyl)-1H-indol-2-yl]-methanone

https://huagongshe.com/reaction/1820516

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,4-Dioxa-8-azaspiro(4.5)decaneHCID 67435—
ReactantDiisopropylethylamineHCID 81531—
ReactantO-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 2733207—
Reactant5-(4-isopropyl-piperazine-1-carbonyl)-1H-indole-2-carboxylic acidHCID 68534120—
Reactant[5-(4-Cyclopentyl-piperazine-1-carbonyl)-1H-indol-2-yl]-(1,1-dioxo-thiomorpholin-4-yl)-methanoneHCID 68680722—
SolventDimethylformamideHCID 6228—
Product(1,4-Dioxa-8-aza-spiro[4.5]dec-8-yl)-[5-(4-isopropyl-piperazine-1-carbonyl)-1H-indol-2-yl]-methanoneHCID 6868415264%

Reaction Steps

The title compound was synthesized in analogy to example 1, from 5-(4-isopropyl-piperazine-1-carbonyl)-1H-indole-2-carboxylic acid 1:1 hydrochlorid (example 1, intermediate b), O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate (commercially available), 1,4-dioxa-8-azaspiro[4.5]decane (commercially available) and N,N-diisopropylethylamine in N,N-dimethylformamide, to give the desired product as a light brown solid (64%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07601711B2
Source datasetuspto-grants-2009_10
ORD IDord-f49d9850e4634e008414eb813cb93d90
Source noteuspto-grants-2009_10