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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2400327Generated: November 1, 2026

Hydrogen Bromide → HCID 63384188, compound

https://huagongshe.com/reaction/2400327

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
Reactant5-(tetrahydrofuran-2-yl)-1,3,4-thiadiazol-2-amineHCID 4085892—
ReactantSodium NitriteHCID 23668193—
SolventWaterHCID 962—
ProductHCID 63384188HCID 63384188—

Reaction Conditions

Temperature0 °C

Reaction Steps

To 5-(Tetrahydro-furan-2-yl)-[1,3,4]thiadiazol-2-ylamine (0.5 g, 2.9 mmol) was added 48% HBr (7 ml) and H2O (7 ml). The reaction mixture was cooled to 0° C. using an icebath. Cu(I)Br (0.42 g, 2.9 mmol) was added, followed by a the dropwise addition of solution of NaNO2 (0.48 g, 10 mmol) in H2O (18 ml). The reaction mixture was stirred for a further 10 mins at 0° C. then allowed to warm up to room temperature over a 35 min period. A solution of saturated bicarbonated was added to the reaction mixture until the pH=6, then extracted with EtOAc, dried (MgSO4), filtered and the solvent removed in vacuo to afford the product (0.5 g, 2.1 mmol). MS: [M+H]+235, 237.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08796244B2
Source datasetuspto-grants-2014_08
ORD IDord-d0f0ef69494245f98bbd13a79987427b
Source noteuspto-grants-2014_08