반응식
[Na].C[Si](C)(C)N[Si](C)(C)C.[CH3:11][O:12][C:13]1[CH:18]=[CH:17][C:16]([CH2:19][C:20]([OH:22])=O)=[CH:15][CH:14]=1.[Cl:23][C:24]1[CH:33]=[C:32]([Cl:34])[CH:31]=[CH:30][C:25]=1C(OC)=O.Cl>C1COCC1>[Cl:23][C:24]1[CH:33]=[C:32]([Cl:34])[CH:31]=[CH:30][C:25]=1[C:20](=[O:22])[CH2:19][C:16]1[CH:15]=[CH:14][C:13]([O:12][CH3:11])=[CH:18][CH:17]=1참가 물질
실험 절차
413 ml of a 2M solution of the sodium salt of hexamethyldisilazane in THF are cooled to −65° C. under a nitrogen atmosphere, 300 ml of THF are added, a solution of 55 g of 4-methoxyphenylacetic acid in 70 ml of THF is then added dropwise and the mixture is left stirring for 3 hours at a temperature of less than −45° C. 64.5 g of methyl 2,4-dichlorobenzoate are subsequently added dropwise and the mixture is left stirring while allowing the temperature to rise to 0° C. The reaction mixture is poured onto an ice/1 liter of 2N HCl mixture and extracted with ether, the organic phase is washed with a saturated NaHCO3 solution and dried over Na2SO4, and the solvent is evaporated under vacuum. The residue is chromatographed on silica gel, elution being carried out with heptane and then with the heptane/AcOEt mixture up to (90/10; v/v). 29 g of the expected compound are obtained.
후처리
- waitthe mixture is left
- waitthe mixture is left
- stirringstirring
- customto rise to 0° C
- extractionextracted with ether
- washthe organic phase is washed with a saturated NaHCO3 solution
- dry with materialdried over Na2SO4
- customthe solvent is evaporated under vacuum
- customThe residue is chromatographed on silica gel, elution
출처 및 근거
- ORD 기록
- ord-f304e214d6de4e7f830d0f20fc635329
- 출처 데이터셋
- uspto-grants-2009_09
- 특허 번호
- US07589120B2
연결된 노트
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