Ammonium Chloride → (3-{(1R,2S,3R)-3-(tert-Butyldimethylsilanyloxy)-2-[(S)-(E)-3-(tert-butyldimethylsilanoxy)oct-1-enyl]-5-oxocyclopentylsulfanyl} propylsulfanyl)acetic acid methyl ester

HRID 1862488

반응식

HRID 1862488 반응식
C([Li])(C)(C)C.[C:6]([Si:10]([O:13][C@H:14](/[CH:20]=[CH:21]/I)[CH2:15][CH2:16][CH2:17][CH2:18][CH3:19])([CH3:12])[CH3:11])([CH3:9])([CH3:8])[CH3:7].[CH3:23][O:24][C:25](=[O:46])[CH2:26][S:27][CH2:28][CH2:29][CH2:30][S:31][C:32]1[C:36](=[O:37])[CH2:35][C@@H:34]([O:38][Si:39]([C:42]([CH3:45])([CH3:44])[CH3:43])([CH3:41])[CH3:40])[CH:33]=1.[NH4+].[Cl-]>CCCCC.CCOCC.C1COCC1>[CH3:23][O:24][C:25](=[O:46])[CH2:26][S:27][CH2:28][CH2:29][CH2:30][S:31][C@H:32]1[C:36](=[O:37])[CH2:35][C@@H:34]([O:38][Si:39]([C:42]([CH3:43])([CH3:45])[CH3:44])([CH3:41])[CH3:40])[C@@H:33]1/[CH:21]=[CH:20]/[C@@H:14]([O:13][Si:10]([C:6]([CH3:7])([CH3:9])[CH3:8])([CH3:11])[CH3:12])[CH2:15][CH2:16][CH2:17][CH2:18][CH3:19]

참가 물질

8

반응물 4

HCID 25517Ammonium ChlorideHCID 11111369(3S)-1-Iodo-3-(tert-butyldimethylsilyloxy)-1-octeneHCID 15406175[3-[(R)-3-(tert-Butyldimethylsilanyloxy)-5-oxocyclopent-1-enylsulfanyl]propylsulfanyl}acetic acid methyl esterHCID 178418306HCID 178418306, 화합물

생성물 1

HCID 12990739(3-{(1R,2S,3R)-3-(tert-Butyldimethylsilanyloxy)-2-[(S)-(E)-3-(tert-butyldimethylsilanoxy)oct-1-enyl]-5-oxocyclopentylsulfanyl} propylsulfanyl)acetic acid methyl ester수율 39%

시약·촉매·용매 3

HCID 3283Diethyl Ether용매2회HCID 8003Pentane용매HCID 8028Tetrahydrofuran용매

반응 조건

온도
-78 °C

실험 절차

tert-Butyllithium (1.47 mL of a 1.7M solution in pentane, 2.5 mmol) was added dropwise to a solution of tert-butyl[(S)-1-((E)-2-iodovinyl) hexyloxy]dimethylsilane 6 (462.5 mg, 1.25 mmol) in Et2O (6.0 mL) at −78° C. After stirring for 30 min lithium 2-thienylcyanocuprate (6.0 mL of a 0.25M solution in THF, 1.5 mmol) was added and the reaction was stirred an additional 30 min at −78° C. A solution of enone 5 (430 mg, 1.1 mmol) in Et2O (1 mL) was added and stirring was continued for an additional 1 h. The reaction mixture was then quickly poured into saturated aqueous NH4Cl cooled to 0° C. The mixture was extracted with EtOAc and the organic portion was washed with brine, dried (Na2SO4), filtered and concentrated in vacuo. The residue was quickly purified by flash column chromatography (silica gel, 100% hexane followed by 8:1 hex/EtOAc) to afford 270 mg (39%) of the above titled compound.

후처리

  1. additionwas added
  2. stirringstirring
  3. waitwas continued for an additional 1 h
  4. temperaturecooled to 0° C
  5. extractionThe mixture was extracted with EtOAc
  6. washthe organic portion was washed with brine
  7. dry with materialdried (Na2SO4)
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo
  10. customThe residue was quickly purified by flash column chromatography (silica gel, 100% hexane followed by 8:1 hex/EtOAc)

출처 및 근거

ORD 기록
ord-86a5dcb7947f493c9a44587e4c28435f
출처 데이터셋
uspto-grants-2003_03
특허 번호
US06538018B1

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