Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 390522Generated: October 26, 2026

Ammonia → 5-Phenyl-3-(pyrazin-2-yl)isoxazole

https://huagongshe.com/reaction/390522

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
ReactantPhenylacetyleneHCID 10821—
ReactantN-Hydroxypyrazine-2-carbimidoyl chlorideHCID 136395910—
Product5-Phenyl-3-(pyrazin-2-yl)isoxazoleHCID 44545618—

Reaction Steps

The titled compound was prepared according to Method CB using the product of Example 83D (79 mg, 0.5 mmol) and 1-ethynyl-benzene (Aldrich, 52 mg, 0.5 mmol). 1H NMR (300 MHz, MeOH-d4) δ 7.41 (s, 1H), 7.47-7.70 (m, 3H), 7.86-8.08 (m, 2H), 8.70 (d, J=2.4 Hz, 1H), 8.76 (dd, J=2.8, 1.6 Hz, 1H), 9.29 (d, J=1.2 Hz, 1H) ppm; MS (DCI/NH3) m/z 224 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08383658B2
Source datasetuspto-grants-2013_02
ORD IDord-58bfa44ff3034a1faf899e8143ee58a0
Source noteuspto-grants-2013_02