Phenol → HCID 11837162, compound

To a suspension of sodium hydride (0.3 g,6.85 mmol, 50% dispersion in oil pre-washed with n-hexane) in dry DMF (4 ml) was added dropwise a solution of phenol (0.59 g, 6.23 mmol) in dry DMF (1 ml). The resulting mixture was stirred under an atmosphere of nitrogen until effervescence had ceased. The resulting mixture was diluted with dry DMF (3 ml) and then added dropwise to a stirred solution of 4-chloro-2-methylthiopyrimidine (1.00 g, 6.23 mmol) in dry DMF (3 ml) at 0° C. An exothermic reaction took place and the temperature of the reaction mixture rose to 5° C. After stirring under nitrogen for 30 minutes at 10° C., GC analysis indicated the formation of a single product (98.8%). The reaction mixture was diluted with water (15 ml) and extracted with ether (2×20 ml). The combined ether extracts were washed with 5% sodium hydroxide solution (2×15 ml) and brine (15 ml) and then dried. Evaporation of the solvent gave 2-methylthio-4-phenoxypyrimidine as a pale yellow oil (1.40 g, 94% pure by GC) which was used directly in the next stage. 1H NMR delta: 2.37 (3H, s)ppm.

1. customAn exothermic reaction
2. customrose to 5° C
3. stirringAfter stirring under nitrogen for 30 minutes at 10° C.
4. extractionextracted with ether (2×20 ml)
5. washThe combined ether extracts were washed with 5% sodium hydroxide solution (2×15 ml) and brine (15 ml)
6. customdried
7. customEvaporation of the solvent

ORD record

ord-d852deafd0cb40a3826c99a3e8257663

Source dataset

uspto-grants-1995_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05395837