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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1518600Generated: November 3, 2026

Pyridine → HCID 49787365, compound

https://huagongshe.com/reaction/1518600

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantDiethylamineHCID 8021—
ReactantTriphosgeneHCID 94429—
Reactant2,3,6-TrimethylcyclohexanolHCID 20269717—
SolventDichloromethaneHCID 6344—
ProductHCID 49787365HCID 4978736551.8%

Reaction Conditions

Temperature0 °C

Reaction Steps

4.27 g (30 mmol) of 2,3,6-trimethylcyclohexanol were placed with 110 ml dichlormethane in a 250 ml vessel at room temperature and 3.08 g (39 mmol) of pyridine were added. The reaction mixture was cooled to 0° C. and 3.56 g (12 mmol) of triphosgene in 15 ml dichlormethane were added dropwise. After five minutes 2.37 g (30 mmol) pyridine were added. Subsequently, 2.19 g (30 mmol) of diethylamine in 15 ml dichlormethane were added dropwise, the resulting mixture was allowed to come to ambient temperature and then quenched with water. After separation of the phases, the water phase was extracted once with dichlormethane and the combined organic phases were concentrated. The raw product was purified by distillation and column chromatography to yield 1.5 g of the desired product as a mixture of isomers with a purity of 99.4%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09072676B2
Source datasetuspto-grants-2015_07
ORD IDord-a51f7b88efa945389ef2ed4bcecd4c88
Source noteuspto-grants-2015_07