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Sodium Carbonate → (4R,9aR)-6-Chloro-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester

HRID 11909
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HRID 11909 반응식
[C:1]([O:5][C:6]([N:8]1[CH2:20][C@@H:19]([CH3:21])[N:18]2[C:10](=[CH:11][C:12]3[C:17]2=[N:16][C:15]([Cl:22])=[CH:14][CH:13]=3)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C([BH3-])#N.[Na+].C(=O)([O-])[O-].[Na+].[Na+]>C(O)(=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:20][C@@H:19]([CH3:21])[N:18]2[C@H:10]([CH2:11][C:12]3[C:17]2=[N:16][C:15]([Cl:22])=[CH:14][CH:13]=3)[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]
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HCID 10340Sodium CarbonateHCID 5003444Sodium cyanoborohydrideHCID 86590114(R)-6-chloro-4-methyl-3,4-dihydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester

생성물 1

HCID 86760225(4R,9aR)-6-Chloro-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester수율 65.7%

시약·촉매·용매 1

HCID 176
Acetic Acid
용매

실험 절차

To a solution of 0.65 g (2.0 mmol) (R)-6-chloro-4-methyl-3,4-dihydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester in 10 ml acetic acid was added 0.64 g (10.1 mmol) sodium cyano borohydride. After 3 h the reaction mixture was poured into 10% aqueous sodium carbonate solution and extracted twice with ethyl acetate. The organic layers were washed with brine, dried over magnesium sulfate, filtered and evaporated. The residue was purified by chromatography over silica gel (0.032–0.063 mm) with n-hexane:ethyl acetate (4:1) as eluant to afford the desired compound as a colorless oil (65.7%).

후처리

  1. extractionextracted twice with ethyl acetate
  2. washThe organic layers were washed with brine
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. customevaporated
  6. customThe residue was purified by chromatography over silica gel (0.032–0.063 mm) with n-hexane:ethyl acetate (4:1) as eluant

출처 및 근거

ORD 기록
ord-0aa2ac51ea084ae5878736e83d8c7556
출처 데이터셋
uspto-grants-2006_08
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07098337B2

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