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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 335236Generated: October 31, 2026

Ammonium Chloride → HCID 66994832, compound

https://huagongshe.com/reaction/335236

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium ChlorideHCID 25517—
ReactantHCID 57742918HCID 57742918—
ReactantButyllithiumHCID 178418339—
ReactantHCID 178418348HCID 178418348—
SolventTetrahydrofuranHCID 8028—
ProductHCID 66994832HCID 6699483295%

Reaction Conditions

Temperature-78 °C

Reaction Steps

A 10 mL round-bottomed flask was charged with 5-(3-bromophenoxy)-3-(3-methoxyphenylthio)-N-(3-(tetrahydrofuran-2-yl)-1,2,4-thiadiazol-5-yl)pyridin-2-amine (41 mg, 0.074 mmol) and THF (2 mL). The reaction was cooled to −78° C. and methyllithium (0.055 mL, 0.088 mmol) was added and stirred for 5 minutes. Butyllithium (0.035 mL, 0.088 mmol) was added and stirred for 5 minutes. The reaction was then poured into saturated aqueous NH4Cl and extract with EtOAc. The organic layer was dried with sodium sulfate, filtered and concentrated. The residue was purified on silica gel (35% ethyl acetate in hexanes) to afford the title compound (36 mg, 95%) after HC salt formation. 1H NMR (d6-DMSO) δ 11.47 (bs, 1H), 8.30 (bs, 1 h), 7.59 (bs, 1H), 7.37 (m, 2H), 7.28 (t, 1H), 7.14 (t, 1H), 7.03 (d, 2H), 6.88 (m, 3H), 4.04 (t, 1H), 3.90-3.75 (m, 3H), 3.72 (s, 3H), 3.57 (m, 1H), 2.25 (m, 2H). Mass spectrum (apci) m/z=479.2 (M+H—HCl).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08883828B2
Source datasetuspto-grants-2014_11
ORD IDord-32f5ba301c434e31b061f48d7e5ff2fe
Source noteuspto-grants-2014_11