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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 390486Generated: October 30, 2026

Ammonia → 5-(3,4-Difluorophenyl)-3-(pyrimidin-5-yl)isoxazole

https://huagongshe.com/reaction/390486

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
Reactant3,4-DifluorophenylacetyleneHCID 13878454—
ReactantN-Hydroxypyrimidine-5-carbimidoyl chlorideHCID 86636847—
Product5-(3,4-Difluorophenyl)-3-(pyrimidin-5-yl)isoxazoleHCID 44546482—

Reaction Steps

The titled compound was prepared as the hydrochloride salt according to Method CB using the product of Example 44B (79 mg, 0.5 mmol) and 4-ethynyl-1,2-difluorobenzene (Apollo, 69 mg, 0.5 mmol). 1H NMR (300 MHz, DMSO-d6) δ 7.71 (ddd, J=10.5, 8.3, 8.3 Hz, 1H), 7.77-7.86 (m, 2H), 8.04 (ddd, J=11.4, 7.6, 2.0 Hz, 1 H), 9.31 (s, 2H), 9.35 (s, 1H) ppm; MS (DCI/NH3) m/z 260 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08383658B2
Source datasetuspto-grants-2013_02
ORD IDord-6f037090e1d441efb2bc86e676403ea8
Source noteuspto-grants-2013_02