Dimethyl Sulfoxide → 2-Methyl-5-(oxiran-2-yl)pyridine

Temperature

65 °C

The title compound was prepared by following general procedure 3. DMSO (4 mL) was added to NaH 60% dispersion in oil (0.314 g, 7.8 mmol, 1.3 equiv.) and heated to 65° C. for 1 h. THF (10 mL) was added at the same temperature and heated for another 10 min. After 10 min., the reaction mixture was cooled to 0° C. Trimethylsulfonium iodide (1.2 g, 5.9 mmol, 1 equiv.) was added and stirred for 10 min. and then a solution of 6-methylnicotinaldehyde (0.720 g, 5.9 mmol, 1 equiv.) in THF was added dropwise. After complete addition, the reaction mixture was stirred at RT for 2 h, the product was detected by LCMS. The reaction mixture was poured into ice water and the product was extracted in diethyl ether (4×50 mL), dried over Na2SO4 and concentrated at 25° C. to get the crude product 2-methyl-5-(oxiran-2-yl)pyridine (1.1 g crude).

1. customThe title compound was prepared
2. temperatureheated for another 10 min
3. temperaturethe reaction mixture was cooled to 0° C
4. additionAfter complete addition
5. stirringthe reaction mixture was stirred at RT for 2 h
6. extractionthe product was extracted in diethyl ether (4×50 mL)
7. dry with materialdried over Na2SO4
8. concentrationconcentrated at 25° C.

ORD record

ord-6356967570b44bd1a245acf526f6d616

Source dataset

uspto-grants-2016_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09409910B2