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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2114495Generated: October 31, 2026

Trifluoroacetic acid → Trifluoroacetic acid

https://huagongshe.com/reaction/2114495

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant2-PyridinecarboxaldehydeHCID 14273—
Reactant1H-imidazole-2-carbaldehydeHCID 24955—
ReactantSodium triacetoxyborohydrideHCID 5049666—
ReactantTetramethylammonium Triacetoxyborohydride (>90%)HCID 13696215—
ReactantHCID 135466501HCID 135466501—
ReactantHCID 178419906HCID 178419906—
ProductTrifluoroacetic acidHCID 6422—
Product3-[10-(1-Pyridin-2-ylmethyl-piperidin-4-yl)-10h-phenoxazin-3-yl]-4h-[1,2,4]oxadiazol-5-oneHCID 135427999—

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-pyridylcarboxaldehyde for 1H-imidazole-2-carboxaldehyde and sodium triacetoxyborohydride for tetramethylammonium triacetoxyborohydride, the title compound 3-[10-(1-pyridin-2-ylmethyl-piperidin-4-yl)-10H-phenoxazin-3-yl]-4H-[1,2,4]oxadiazol-5-one, 6b was obtained as a TFA salt after purification via reverse phase HPLC (eluent: CH3CN in H2O containing 0.1% TFA). MS m/z (MH+) 441.9.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07432257B2
Source datasetuspto-grants-2008_10
ORD IDord-87fc064b363a44659f8303ba772fad18
Source noteuspto-grants-2008_10