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Citric Acid → 5-(3,3-dimethyl-but-1-ynyl)-3-[((1R)-4-methyl-cyclohex-3-enecarbonyl)-(1-oxa-spiro[2.5]oct-6-yl)-amino]thiophene-2-carboxylic acid methyl ester

HRID 1053491
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HRID 1053491 반응식
[Cl-].[CH3:2][S+](C)(C)=O.[H-].[Na+].[CH3:9][O:10][C:11]([C:13]1[S:14][C:15]([C:35]#[C:36][C:37]([CH3:40])([CH3:39])[CH3:38])=[CH:16][C:17]=1[N:18]([C:26]([C@@H:28]1[CH2:33][CH2:32][C:31]([CH3:34])=[CH:30][CH2:29]1)=[O:27])[CH:19]1[CH2:24][CH2:23][C:22](=[O:25])[CH2:21][CH2:20]1)=[O:12].C(O)(=O)CC(CC(O)=O)(C(O)=O)O>CS(C)=O.C1COCC1>[CH3:9][O:10][C:11]([C:13]1[S:14][C:15]([C:35]#[C:36][C:37]([CH3:40])([CH3:39])[CH3:38])=[CH:16][C:17]=1[N:18]([C:26]([C@@H:28]1[CH2:33][CH2:32][C:31]([CH3:34])=[CH:30][CH2:29]1)=[O:27])[CH:19]1[CH2:20][CH2:21][C:22]2([O:25][CH2:2]2)[CH2:23][CH2:24]1)=[O:12]
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참가 물질

7

반응물 4

HCID 311Citric AcidHCID 24758Sodium hydrideHCID 197819Trimethyloxosulphonium chlorideHCID 679837405-(3,3-dimethyl-but-1-ynyl)-3-[((1R)-4-methyl-cyclohex-3-enecarbonyl)-(4-oxo-cyclohexyl)-amino]-thiophene-2-carboxylic acid methyl ester

생성물 1

HCID 866989545-(3,3-dimethyl-but-1-ynyl)-3-[((1R)-4-methyl-cyclohex-3-enecarbonyl)-(1-oxa-spiro[2.5]oct-6-yl)-amino]thiophene-2-carboxylic acid methyl ester
수율 70%

시약·촉매·용매 2

HCID 679Dimethyl Sulfoxide용매HCID 8028Tetrahydrofuran용매

실험 절차

Trimethylsulfoxonium chloride (79 mg, 0.62 mmol) in DMSO (1.5 mL) was treated with sodium hydride (21 mg, 60% oil dispersion, 0.53 mmol) and stirred at ambient temperature for 10 min. 5-(3,3-Dimethyl-but-1-ynyl)-3-[((1R)-4-methyl-cyclohex-3-enecarbonyl)-(4-oxo-cyclohexyl)-amino]-thiophene-2-carboxylic acid methyl ester 507 in THF (1 mL+0.5 mL) was added dropwise and the reaction mixture was stirred for 45 min. The orange solution was treated with 5% citric acid until pH 3 and partitioned between water and ethyl acetate. The organic layer was separated and the aqueous was extracted again with ethyl acetate. The combined organics were washed with 5% LiCl, water and brine, and dried over sodium sulfate. After filtration and concentration, the residue was purified by flash chromatography (20-75% EtOAc:hexanes) to afford 0.134 g (70% yield) of 5-(3,3-dimethyl-but-1-ynyl)-3-[((1R)-4-methyl-cyclohex-3-enecarbonyl)-(1-oxa-spiro[2.5]oct-6-yl)-amino]-thiophene-2-carboxylic acid methyl ester 508 as a white powder.

후처리

  1. stirringthe reaction mixture was stirred for 45 min
  2. custompartitioned between water and ethyl acetate
  3. customThe organic layer was separated
  4. extractionthe aqueous was extracted again with ethyl acetate
  5. washThe combined organics were washed with 5% LiCl, water and brine
  6. dry with materialdried over sodium sulfate
  7. filtrationAfter filtration and concentration
  8. customthe residue was purified by flash chromatography (20-75% EtOAc:hexanes)

출처 및 근거

ORD 기록
ord-527aac3c98fb4e5298b35d546181d7dc
출처 데이터셋
uspto-grants-2016_07
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09393256B2

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