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ChemicalBook CAS DataBase List 6-(TRIFLUOROMETHYL)PYRIDINE-3-CARBOXALDEHYDE
386704-12-7

6-(TRIFLUOROMETHYL)PYRIDINE-3-CARBOXALDEHYDE synthesis

5synthesis methods
6-(TRIFLUOROMETHYL)PYRIDINE-3-CARBOXALDEHYDE was prepared from 6-(trifluoroMethyl)pyridin-3-Methanol with  manganese(IV) oxide by stirring in dichloromethane for overnight at 0℃.
386704-04-7 Synthesis
6-(TRIFLUOROMETHYL)PYRIDINE-3-METHANOL

386704-04-7
151 suppliers
$21.00/250mg

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Yield:386704-12-7 95%

Reaction Conditions:

with manganese(IV) oxide in dichloromethane at 0 - 20;

Steps:


Intermediate 174: 6-(trifluoromethyl)nicotinaldehvde; To a solution of 800 mg of 6-(trifluoromethyl)pyridin-3-yl)methanol (intermediate 173, 4.52 mmole) in 50 mL of DCM cooled at 00C, were added 2 g of MnO2 (23 mmole). The mixture was stirred at RT overnight. The solution was filtered and concentrated on standing at RT to give the title compound (750 mg, 95%) as white solid. 1H-NMR (CDCI3) δ: 7.88-7.90 (1 H, d), 8.36-8.38 (1 H, d), 9.20 (1 H, s), 10.22 (1 H, s); TLC (DCM/MeOH 10:1 ): Rf=0.9.

References:

GLAXO GROUP LIMITED WO2008/148853, 2008, A1 Location in patent:Page/Page column 182

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