Tributylstannane → 2-(Tributylstannyl)pyrimidine
Reaction equation
C([Li])CCC.C(NC(C)C)(C)C.[CH2:13]([SnH:17]([CH2:22][CH2:23][CH2:24][CH3:25])[CH2:18][CH2:19][CH2:20][CH3:21])[CH2:14][CH2:15][CH3:16].Cl[C:27]1[N:32]=[CH:31][CH:30]=[CH:29][N:28]=1>O.O1CCCC1.CCCCCC>[N:28]1[CH:29]=[CH:30][CH:31]=[N:32][C:27]=1[Sn:17]([CH2:13][CH2:14][CH2:15][CH3:16])([CH2:18][CH2:19][CH2:20][CH3:21])[CH2:22][CH2:23][CH2:24][CH3:25]Participants
Conditions
- Temperature
- 0 °C
Procedure
3.2 ml of a hexane solution containing 1.57 mol of n-butyllithium was slowly added dropwise into a solution of 20 ml of tetrahydrofuran containing 707 μl of diisopropylamine under ice-cooling. After stirring at 0° C. for 30 minutes, 1.4 ml of tri-n-butyltin hydride was slowly added dropwise thereinto. After stirring at 0° C. for 30 minutes, the mixture cooled to −78° C. and a suspension of 30 ml of tetrahydrofuran containing 2-chloropyrimidine was slowly added drowise thereinto. After stirring at −78° C. for one hour as it was and then at 0° C. for 2 hours, water was added to the reaction solution. The mixture was extracted with ethyl acetate, and the organic phase was washed with brine and the solvent was removed. Then, the residue was subjected to silica gel column chromatography and eluted with hexane/ethyl acetate (10:1) and then with hexane/ethyl acetate (7:1), to give 654 mg of the target compound.
Workup
- temperaturecooling
- stirringAfter stirring at 0° C. for 30 minutes
- temperaturethe mixture cooled to −78° C.
- additionwas slowly added drowise
- stirringAfter stirring at −78° C. for one hour as it
- waitat 0° C. for 2 hours
- extractionThe mixture was extracted with ethyl acetate
- washthe organic phase was washed with brine
- customthe solvent was removed
- washeluted with hexane/ethyl acetate (10:1)
Sources & evidence
- ORD record
- ord-0397758302c240f790c80cbb927f77fc
- Source dataset
- uspto-grants-2003_07
- Patent number
- US06599917B1
Reaction notes
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