Methanol → HCID 178498694, compound

HRID 2266379Notes

Reaction equation

[OH:1][C:2]1[N:10]=[CH:9][CH:8]=[C:7]([I:11])[C:3]=1[C:4](Cl)=[O:5].[CH3:12][OH:13]>>[OH:1][C:2]1[N:10]=[CH:9][CH:8]=[C:7]([I:11])[C:3]=1[C:4]([O:13][CH3:12])=[O:5]

Participants

Reactant 2

HCID 887Methanol

HCID 178521121HCID 178521121, compound

Product 1

HCID 178498694HCID 178498694, compound

Procedure

Thionyl chloride (3.81 ml, 52.2 mmol) was added to a suspension of 2-hydroxy-4-iodonicotinic acid (3.46 g, 13.1 mmol) in dichloromethane (12 mL) in a pressure vessel at room temperature. The reaction mixture was then heated at 75° C. for 3 h. An aliquot was taken and hydrolyzed with methanol. LCMS analysis showed the derived methyl ester seen as major compound. The reaction mixture was cooled to room temperature and was concentrated in vacuo to give 2-hydroxy-4-iodonicotinoyl chloride. 2-hydroxy-4-iodonicotinoyl chloride in MeOH (100 mL) was stirred at room temperature for 2 h. Concentration in vacuo of the reaction mixture afforded methyl 2-hydroxy-4-iodonicotinate (3.64 g, 13.1 mmol, quantitative yield). MS (ESI pos. ion) m/z: 280 (MH+). Calc'd exact mass for C7H61NO3: 279.

Workup

concentrationConcentration in vacuo of the reaction mixture

Sources & evidence

ORD record: ord-a93698f71c8744039a20d731ff55a87a
Source dataset: uspto-grants-2010_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07858623B2

Reaction notes

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