Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 390526Generated: October 25, 2026

Ammonia → 3-(Pyrazin-2-yl)-5-(3,4,5-trifluorophenyl)isoxazole

https://huagongshe.com/reaction/390526

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
Reactant5-Ethynyl-1,2,3-trifluorobenzeneHCID 22709071—
ReactantN-Hydroxypyrazine-2-carbimidoyl chlorideHCID 136395910—
Product3-(Pyrazin-2-yl)-5-(3,4,5-trifluorophenyl)isoxazoleHCID 44545684—

Reaction Steps

The titled compound was prepared according to Method CB using the product of Example 83D (79 mg, 0.5 mmol) and 5-ethynyl-1,2,3-trifluorobenzene (Apollo, 78 mg, 0.5 mmol). 1H NMR (300 MHz, MeOH-d4) δ 7.53 (s, 1H), 7.79 (dd, J=8.5, 6.4 Hz, 2H), 8.70 (d, J=2.4 Hz, 1H), 8.76 (dd, J=2.5, 1.5 Hz, 1H), 9.29 (d, J=1.7 Hz, 1H) ppm; MS (DCI/NH3) m/z 278 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08383658B2
Source datasetuspto-grants-2013_02
ORD IDord-1f77d414c9fa4b21b4c6d2ed655598ec
Source noteuspto-grants-2013_02