Diisopropylamine → HCID 18545288, compound

To 140 ml of an anhydrous THF solution of 7.7 g of diisopropylamine was added 50 ml (1.6 M solution in hexane) of n-butyllithium at −78° C., and the mixture was stirred at that temperature for 30 minutes. To the reaction mixture was added 10 ml of a THF solution of 7.4 g of 2-fluoropyrimidine, followed by stirring at the same temperature for 30 minutes. To the reaction mixture was further added a THF solution of 8.61 g of dimethyl disulfide, followed by stirring at the same temperature for 20 minutes. The reaction mixture was poured into about 200 ml of water, and the aqueous layer was extracted twice with ethyl acetate. The organic layers were combined and washed with a saturated sodium chloride aqueous solution and dried over anhydrous sodium sulfate. The solvent was evaporated, and the residue was subjected to silica gel column chromatography using a mixture of ethyl acetate and hexane (1:19 by volume) as a developing solution. The fraction containing the desired compound was concentrated to yield 6.11 g of the title compound.

1. stirringby stirring at the same temperature for 30 minutes
2. stirringby stirring at the same temperature for 20 minutes
3. extractionthe aqueous layer was extracted twice with ethyl acetate
4. washwashed with a saturated sodium chloride aqueous solution
5. dry with materialdried over anhydrous sodium sulfate
6. customThe solvent was evaporated
7. additiona mixture of ethyl acetate and hexane (1:19 by volume) as a developing solution
8. additionThe fraction containing the desired compound
9. concentrationwas concentrated

ORD record

ord-b47ec032abaf4cc1b71db4d307ca9e95

Source dataset

uspto-grants-2001_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06169086A