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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 390516Generated: October 26, 2026

Ammonia → 3-(Pyrazin-2-yl)-5-(pyridin-3-yl)isoxazole

https://huagongshe.com/reaction/390516

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
Reactant3-EthynylpyridineHCID 186003—
ReactantN-Hydroxypyrazine-2-carbimidoyl chlorideHCID 136395910—
Product3-(Pyrazin-2-yl)-5-(pyridin-3-yl)isoxazoleHCID 69001780—

Reaction Steps

The titled compound was prepared as the bishydrochloride salt according to Method CB using the product of Example 83D (79 mg, 0.5 mmol) and 3-ethynylpyridine (Aldrich, 0.52 mg, 0.5 mmol). 1H NMR (300 MHz, DMSO-d6) δ 7.77 (dd, J=7.9, 5.2 Hz, 1H), 7.92 (s, 1H), 8.55 (dt, J=7.9, 1.8 Hz, 2H), 8.76-8.98 (m, 3 H), 9.32 (d, J=1.2 Hz, 2H) ppm; MS (DCI/NH3) m/z 225 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08383658B2
Source datasetuspto-grants-2013_02
ORD IDord-d5ae76ee4eee4534ac207a81ba8ed1d7
Source noteuspto-grants-2013_02