Triacetoxyperiodinane → tert-Butyl 2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-1,4-dioxo-2,8-diazaspiro[4.5]decane-8-carboxylate

HRID 1848508노트

반응식

HRID 1848508 반응식
[OH:1][CH:2]1[C:6]2([CH2:11][CH2:10][N:9]([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:8][CH2:7]2)[C:5](=[O:19])[N:4]([C:20]2[CH2:21][O:22][C:23](=[O:26])[C:24]=2[CH3:25])[CH2:3]1.C(=O)(O)[O-].[Na+].CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O>>[CH3:25][C:24]1[C:23](=[O:26])[O:22][CH2:21][C:20]=1[N:4]1[CH2:3][C:2](=[O:1])[C:6]2([CH2:7][CH2:8][N:9]([C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:10][CH2:11]2)[C:5]1=[O:19]

참가 물질

4

반응물 3

HCID 159087TriacetoxyperiodinaneHCID 516892Sodium BicarbonateHCID 86709492tert-Butyl 4-hydroxy-2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-1-oxo-2,8-diazaspiro[4.5]decane-8-carboxylate

생성물 1

HCID 86709494tert-Butyl 2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-1,4-dioxo-2,8-diazaspiro[4.5]decane-8-carboxylate

실험 절차

To tert-butyl 4-hydroxy-2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-1-oxo-2,8-diazaspiro[4.5]decane-8-carboxylate (see example I-37A and I-37B, Step C, racemate prior to chiral HPLC separation) (200 mg, 0.546 mmol) in DCM (2.8 mL) was added sodium bicarbonate (68.8 mg, 0.819 mmol) and Dess-Martin periodinane (347 mg, 0.819 mmol). The reaction mixture was vigorously stirred for 1.5 h, then quenched with 10% Na2S2O3 and NaHCO3 aqueous solutions, and stirred for 20 min. The aqueous layer was extracted with DCM, and the organic layers were washed with brine, dried, and concentrated to give tert-butyl 2-(4-methyl-5-oxo-2,5-dihydrofuran-3-yl)-1,4-dioxo-2,8-diazaspiro[4.5]decane-8-carboxylate. LC/MS: [(M+1)]+=365

후처리

  1. customand I-37B, Step C, racemate prior to chiral HPLC separation) (200 mg, 0.546 mmol) in DCM (2.8 mL)
  2. customquenched with 10% Na2S2O3 and NaHCO3 aqueous solutions
  3. stirringstirred for 20 min
  4. extractionThe aqueous layer was extracted with DCM
  5. washthe organic layers were washed with brine
  6. customdried
  7. concentrationconcentrated

출처 및 근거

ORD 기록
ord-2717c78d76814af7ad739e9d394ef3cf
출처 데이터셋
uspto-grants-2015_02
특허 번호
US08952166B2

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