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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2114494Generated: October 31, 2026

Trifluoroacetic acid → Trifluoroacetic acid

https://huagongshe.com/reaction/2114494

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant2-ThiophenecarboxaldehydeHCID 7364—
Reactant1H-imidazole-2-carbaldehydeHCID 24955—
ReactantSodium triacetoxyborohydrideHCID 5049666—
ReactantTetramethylammonium Triacetoxyborohydride (>90%)HCID 13696215—
ReactantHCID 135466501HCID 135466501—
ReactantHCID 178419906HCID 178419906—
ProductTrifluoroacetic acidHCID 6422—
ProductHCID 135428004HCID 135428004—

Reaction Steps

Using an adaptation of the method described in Procedure 7, substituting the TFA salt of 3-(10-piperidin-4-yl-10H-phenoxazin-3-yl)-4H-[1,2,4]oxadiazol-5-one, 2b for the TFA salt of 10-piperidin-4-yl-3-(1H-tetrazol-5-yl)-10H-phenoxazine, 6a, 2-thiophene carboxaldehyde for 1H-imidazole-2-carboxaldehyde and sodium triacetoxyborohydride for tetramethylammonium triacetoxyborohydride, the title compound 3-[10-(1-thiophen-2-ylmethyl-piperidin-4-yl)-10H-phenoxazin-3-yl]-4H-[1,2,4]oxadiazol-5-one, 5b was obtained as a TFA salt after purification via reverse phase HPLC (eluent: CH3CN in H2O containing 0.1% TFA). MS m/z (MH+) 446.9.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07432257B2
Source datasetuspto-grants-2008_10
ORD IDord-a25392b37557463592339a9480406977
Source noteuspto-grants-2008_10