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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 76232Generated: October 28, 2026

Trifluoroacetic acid → {2-[9-(1H-pyrazol-1-yl)-6-oxaspiro[4.5]decan-9-yl]ethyl}(thiophen-2-ylmethyl)amine

https://huagongshe.com/reaction/76232

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant(2-Thienylmethyl)amineHCID 34005—
ReactantSodium triacetoxyborohydrideHCID 5049666—
Reactant2-[9-(1H-pyrazol-1-yl)-6-oxaspiro[4.5]decan-9-yl]acetaldehydeHCID 86671428—
Product{2-[9-(1H-pyrazol-1-yl)-6-oxaspiro[4.5]decan-9-yl]ethyl}(thiophen-2-ylmethyl)amineHCID 6831465982%

Reaction Steps

To a mixture of 2-[9-(1H-pyrazol-1-yl)-6-oxaspiro[4.5]decan-9-yl]acetaldehyde (15 mg, 0.06 mmol) and thiophen-2-ylmethanamine (19 uL, 0.18 mmol) was stirred at rt for 1 h before NaBH(OAc)3 (25.4 mg, 0.12 mmol) was added. The solution stirred overnight. After removal of solvent, the residue was purified by HPLC to provide {2-[9-(1H-pyrazol-1-yl)-6-oxaspiro[4.5]decan-9-yl]ethyl}(thiophen-2-ylmethyl)amine (17 mg, 61% yield) as a TFA salt. LCMS m/z 346 (M+1) observed.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08835488B2
Source datasetuspto-grants-2014_09
ORD IDord-3ed9e25a8fc64a63b8438663d65aeea1
Source noteuspto-grants-2014_09