Reaction equation
[H-].[Na+].[CH3:3][C@@H:4]([CH2:23][CH3:24])[CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][C:10]1[CH:11]=[N:12][C:13]([C:16]2[CH:21]=[CH:20][C:19]([OH:22])=[CH:18][CH:17]=2)=[N:14][CH:15]=1.Br[CH2:26][CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH3:33]>CN(C)C=O>[CH2:26]([O:22][C:19]1[CH:20]=[CH:21][C:16]([C:13]2[N:12]=[CH:11][C:10]([CH2:9][CH2:8][CH2:7][CH2:6][CH2:5][C@@H:4]([CH3:3])[CH2:23][CH3:24])=[CH:15][N:14]=2)=[CH:17][CH:18]=1)[CH2:27][CH2:28][CH2:29][CH2:30][CH2:31][CH2:32][CH3:33]Participants
Procedure
Pour 0.33 g of sodium hydride (about 50% oil suspension), 3 ml of dry N,N-dimethylformamide into a 30 ml three-mouth flask equipped with a cooling tube, thermometer, dripping funnel, and calcium chloride tube. Next, slowly drip 1.71 g of optically active (s)-4-[5-(6-methyl octyl)-2-pyrimidinyl]phenol which is dissolved in 6 ml of dry N,N-dimethylformamide, into the flask at room temperature. Furthermore, after reacting it for 30 minutes, add 1.10 g of 1-bromoctane, allow to react for 7 hours at 90° C. After the reaction, pour the mixture into ice water, then extract the product with ethyl acetate. The organic layer is thoroughly washed with water, dried, the organic solvent is evaporated and removed, and then the impure product is obtained. This impure product is refined with silica gel chromatography, and recrystallized to obtain 1.3 g of optically active (s)-2-[4-n-octyloxyphenyl]-5-[6-methyloctyl]pyrimidine.
Workup
- customequipped with a cooling tube
- customfor 30 minutes
- customto react for 7 hours at 90° C
- customAfter the reaction
- extractionextract the product with ethyl acetate
- washThe organic layer is thoroughly washed with water
- customdried
- customthe organic solvent is evaporated
- customremoved
- customthe impure product is obtained
- customrecrystallized
Sources & evidence
- ORD record
- ord-ae7c4249e17a4e4bb669f0513f28a2f7
- Source dataset
- uspto-grants-1988_02
- Patent number
- US04725688
Linked notes
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