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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1942285Generated: November 1, 2026

Hydrochloric Acid → HCID 66618938, compound

https://huagongshe.com/reaction/1942285

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant6-Methylnicotinic acidHCID 137860—
ReactantIsoxazole, 4-(chloromethyl)-5-methyl-3-phenyl-HCID 11052826—
ReactantButyllithiumHCID 178418339—
SolventTetrahydrofuranHCID 8028—
ProductHCID 66618938HCID 666189386.5%

Reaction Conditions

Temperature-74 °C

Reaction Steps

n-Butyllithium solution was added dropwise to a stirred suspension of 6-methylnicotinic acid (137 mg, 1.0 mmol) in THF (3 mL) over 30 min at −74° C. After 1 h a solution of 4-chloromethyl-5-methyl-3-phenyl-isoxazole (208 mg, 1.0 mmol) in THF (3 mL) was added dropwise such that the temperature did not exceed −68° C. The reaction mixture was stirred at −74° C. for 1 h, then HCl (1 N, 10 mL) added and the reaction mixture warmed to room temperature and extracted with ethyl acetate. The combined organic extracts were dried, filtered and concentrated. Purification by chromatography (silica, heptane:ethyl acetate=100:0 to 9:1) afforded the title compound (20 mg, 6%) as a light yellow oil. MS: m/e=168.3 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08389550B2
Source datasetuspto-grants-2013_03
ORD IDord-d1c994ff19d449b2a6523d55b341f990
Source noteuspto-grants-2013_03