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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 578153Generated: October 26, 2026

Ammonia → 3-(Pyridazin-4-yl)-5-(pyridin-3-yl)-1,2,4-oxadiazole

https://huagongshe.com/reaction/578153

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
Reactant3-Pyridinecarbonyl chloride, hydrochloride (1:1)HCID 88438—
ReactantN-Hydroxy-4-pyridazinecarboximidamideHCID 136140373—
Product3-(Pyridazin-4-yl)-5-(pyridin-3-yl)-1,2,4-oxadiazoleHCID 44544569—

Reaction Steps

The titled compound was prepared according to the procedure of Method D using the product of Example 83D and nicotinoyl chloride hydrochloride (Aldrich). 1H NMR (300 MHz, DMSO-d6) δ 7.75 (ddd, J=8.0, 4.9, 0.7 Hz, 1H), 8.32 (dd, J=5.3, 2.2 Hz, 1H), 8.61 (dt, J=8.2, 1.8 Hz, 1H), 8.93 (dd, J=5.1, 1.7 Hz, 1H), 9.39 (dd, J=2.2, 0.8 Hz, 1H), 9.55 (dd, J=5.4, 1.4 Hz, 1H), 9.85 (dd, J=2.2, 1.2 Hz, 1H) ppm; MS (DCI/NH3) m/z 226 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09040568B2
Source datasetuspto-grants-2015_05
ORD IDord-6b01a53909584d9cbc73588db5c597d3
Source noteuspto-grants-2015_05