Ethyl Acetate → methyl 5-formyl-(R)-3-[(tetrahydro-2H-pyran-2-yl)oxy]-pentanecarboxylate

HRID 1681971

반응식

HRID 1681971 반응식
[O:1]1[CH2:6][CH2:5][CH2:4][CH2:3][CH:2]1[O:7][C@H:8]([CH2:14][CH2:15][CH:16]=C)[CH2:9][C:10](OC)=O.[O:18]=[O+][O-].[H][H].[C:23]([O:26][CH2:27]C)(=[O:25])C>>[CH:16]([CH2:15][CH2:14][C@@H:8]([O:7][CH:2]1[CH2:3][CH2:4][CH2:5][CH2:6][O:1]1)[CH2:9][CH2:10][C:23]([O:26][CH3:27])=[O:25])=[O:18]

참가 물질

5

반응물 4

HCID 8857Ethyl AcetateHCID 24823OzoneHCID 86743990methyl (R)-3-[(tetrahydro-2H-pyran-2-yl)oxy]-6-heptenoateHCID 178418361HCID 178418361, 화합물

생성물 1

HCID 86743989methyl 5-formyl-(R)-3-[(tetrahydro-2H-pyran-2-yl)oxy]-pentanecarboxylate

실험 절차

A solution of 2.56 g of methyl (R)-3-[(tetrahydro-2H-pyran-2-yl)oxy]-6-heptenoate in 40 ml of ethyl acetate was treated with ozone at -75° C. After completion of the reaction 0.1 g of Pd-on-carbon was added thereto and the mixture was hydrogenated at room temperature. After the hydrogen uptake was finished the catalyst was filtered off and washed with ethyl acetate and the filtrate and washings were evaporated in vacuo There was obtained methyl 5-formyl-(R)-3-[(tetrahydro-2H-pyran-2- yl)oxy]-pentanecarboxylate.

후처리

  1. additionwas added
  2. customwas hydrogenated at room temperature
  3. filtrationwas filtered off
  4. washwashed with ethyl acetate
  5. customthe filtrate and washings were evaporated in vacuo

출처 및 근거

ORD 기록
ord-d3eeb5bb118342bba91d9bd58bf0ef56
출처 데이터셋
uspto-grants-1992_12
특허 번호
US05175186

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