Sodium Chloride → methyl (1R,2R)-2-(hydroxymethyl)cyclopropane-1-carboxylate
반응식
[CH3:1][O:2][C:3]([C@@H:5]1[CH2:7][C@H:6]1[C:8](O)=[O:9])=[O:4].B(OC)(OC)OC.[Cl-].[Na+]>O1CCCC1>[CH3:1][O:2][C:3]([C@@H:5]1[CH2:7][C@H:6]1[CH2:8][OH:9])=[O:4]참가 물질
5
실험 절차
Add boranemethyl sulfide complex (177 mL, 0.354 mol), slowly, by means of a dropping funnel, to a stirring solution of trans-cyclopropane-1,2-dicarboxylic acid monomethyl ester (Example 3a) (25.5 g, 0.177 mol), trimethyl borate (60.3 mL, 0.531 mol) and tetrahydrofuran (150 mL) at 0° C. After complete addition, allow the reaction to come to ambient temperature and stir for 2 h more. Pour the reaction mixture into a stirring solution of 50% aqueous sodium chloride solution (1.5 L)-concentrated HCl (10 mL). Extract the mixture with ethyl acetate (EtOAc) (3 times), combine the extracts, dry (Na2SO4) and concentrate the solvent to obtain a colorless oil: 22.6 g.
후처리
- additionAdd boranemethyl sulfide complex (177 mL, 0.354 mol)
- customat 0° C
- additionAfter complete addition
- customthe reaction
- customto come to ambient temperature
- extractionExtract the mixture with ethyl acetate (EtOAc) (3 times)
- dry with materialdry (Na2SO4)
- concentrationconcentrate the solvent
- customto obtain a colorless oil
출처 및 근거
- ORD 기록
- ord-0e5479373f4844eeaa52457e3f8e98f5
- 출처 데이터셋
- uspto-grants-2010_08
- 특허 번호
- US07772252B2
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