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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2421750Generated: October 25, 2026

Hydrochloric Acid → 4-Pyridinecarboxylic acid, 3-[(4-methoxyphenyl)amino]-

https://huagongshe.com/reaction/2421750

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantP-AnisidineHCID 7732—
Reactant3-Fluoropyridine-4-carboxylic acidHCID 345361—
ReactantLithium HexamethyldisilazideHCID 2733832—
SolventTetrahydrofuranHCID 8028—
Product4-Pyridinecarboxylic acid, 3-[(4-methoxyphenyl)amino]-HCID 61847113%

Reaction Conditions

Temperature-78 °C

Reaction Steps

3-Fluoro-isonicotinic acid (50 mg, 0.354 mmol) and p-anisidine (44 mg, 0.354 mmol) was added to 2 ml dry THF and the mixture was cooled to −78° C. LiHMDS (1M in THF, 1.24 ml) was added and the mixture was allowed to warm to room temperature over night. Hydrochloric acid (1M in methanol, 5 ml) was added and the volatiles were removed in vacuo. The crude material was purified by preparative RP chromatography to give 11 mg (45 μmol; 13% yield) of pure desired product. LC-MS (method V): rt=1.82 min; m/z [M+H]+ 245.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07956191B2
Source datasetuspto-grants-2011_06
ORD IDord-91a420bb6c644082a4d9dc0c7b835e4f
Source noteuspto-grants-2011_06