Iodoethane → (+/-)-tert-butyl (1R,5S,6S)-6-ethoxy-5-methyl-3-(3-nitropyridin-4-yl)cyclohex-2-enylcarbamate

HRID 879208노트

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HRID 879208 반응식
[OH:1][C@@H:2]1[C@H:7]([NH:8][C:9](=[O:15])[O:10][C:11]([CH3:14])([CH3:13])[CH3:12])[CH:6]=[C:5]([C:16]2[CH:21]=[CH:20][N:19]=[CH:18][C:17]=2[N+:22]([O-:24])=[O:23])[CH2:4][C@@H:3]1[CH3:25].I[CH2:27][CH3:28]>C1COCC1.[Ag]=O>[CH2:27]([O:1][C@@H:2]1[C@H:7]([NH:8][C:9](=[O:15])[O:10][C:11]([CH3:12])([CH3:13])[CH3:14])[CH:6]=[C:5]([C:16]2[CH:21]=[CH:20][N:19]=[CH:18][C:17]=2[N+:22]([O-:24])=[O:23])[CH2:4][C@@H:3]1[CH3:25])[CH3:28]

참가 물질

5

반응물 2

HCID 6340IodoethaneHCID 86705242(+/-)-Tert-butyl (1R,5S,6S)-6-hydroxy-5-methyl-3-(3-nitropyridin-4-yl)cyclohex-2-enylcarbamate

생성물 1

HCID 86705257(+/-)-tert-butyl (1R,5S,6S)-6-ethoxy-5-methyl-3-(3-nitropyridin-4-yl)cyclohex-2-enylcarbamate수율 31%

시약·촉매·용매 2

HCID 92152Silver(II) oxide촉매HCID 8028Tetrahydrofuran용매

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온도
55 °C

실험 절차

(+/−)-Tert-butyl (1R,5S,6S)-6-hydroxy-5-methyl-3-(3-nitropyridin-4-yl)cyclohex-2-enylcarbamate (1.0 equiv.) was suspended in iodoethane (100.0 equiv.). Silver oxide (6.0 equiv.) was added to the mixture and the reaction vessel was wrapped in foil (kept dark) and allowed to stir 55° C. for 10 hrs. The reaction was diluted with THF and filtered through a pad of celite. The celite cake was further washed with MeOH. The organics were concentrated and the crude was taken up in DCM, washed with NaHCO3 (aq), dried over Na2SO4, filtered and concentrated. The crude was loaded onto silica gel and purified via ISCO to yield (+/−)-tert-butyl (1R,5S,6S)-6-ethoxy-5-methyl-3-(3-nitropyridin-4-yl)cyclohex-2-enylcarbamate in 31% yield. LC/MS (m/z)=378.1 (MH+), Rt=0.99 min.

후처리

  1. filtrationfiltered through a pad of celite
  2. washThe celite cake was further washed with MeOH
  3. concentrationThe organics were concentrated
  4. washwashed with NaHCO3 (aq)
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. custompurified via ISCO

출처 및 근거

ORD 기록
ord-f9cf740c4c004b6da460aa4f60b577aa
출처 데이터셋
uspto-grants-2015_03
특허 번호
US08987457B2

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