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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 400187Generated: October 30, 2026

Water → 3-Methyl-isonicotinic acid

https://huagongshe.com/reaction/400187

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
Reactant3,4-DimethylpyridineHCID 11417—
ReactantSelenium DioxideHCID 24007—
SolventDiphenyl EtherHCID 7583—
Product3-Methyl-isonicotinic acidHCID 150200344%

Reaction Conditions

Temperature185 °C

Reaction Steps

To a hot (155° C.) solution of 10.7 g (0.1 mol) of 3,4-lutidine in 100 mL diphenylether, was added 18 g (0.16 mol) selenium dioxide in portions. After about 20 minutes, the reaction was heated to 185° C. and allowed to react for approximately thirty minutes. After cooling, the reaction mixture was diluted with water and filtered. The filtrate was extracted with chloroform and the chloroform extracts were then concentrated under reduced pressure to provide 6.0 g of a pale brown solid. Yield: 44%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05827859
Source datasetuspto-grants-1998_10
ORD IDord-76cb62112967440cbd7ff423bb7a6ff3
Source noteuspto-grants-1998_10