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Methyl chloroformate → methyl (1aRS,7bSR)-5-[N-(methoxycarbonyl)-N-(4-fluoro-2-nitrobenzene-sulfonyl)amino]-1,1a,2,7b-tetrahydro-cyclopropa[c]chromene-4-carboxylate

HRID 927991
ノート
印刷プレビュー

反応式

HRID 927991 の反応式
[F:1][C:2]1[CH:7]=[CH:6][C:5]([S:8]([NH:11][C:12]2[C:21]([C:22]([O:24][CH3:25])=[O:23])=[C:20]3[C:15]([CH:16]4[CH2:26][CH:17]4[CH2:18][O:19]3)=[CH:14][CH:13]=2)(=[O:10])=[O:9])=[C:4]([N+:27]([O-:29])=[O:28])[CH:3]=1.[H-].[Na+].Cl[C:33]([O:35][CH3:36])=[O:34].C(=O)(O)[O-].[Na+]>C1COCC1>[CH3:36][O:35][C:33]([N:11]([C:12]1[C:21]([C:22]([O:24][CH3:25])=[O:23])=[C:20]2[C:15]([CH:16]3[CH2:26][CH:17]3[CH2:18][O:19]2)=[CH:14][CH:13]=1)[S:8]([C:5]1[CH:6]=[CH:7][C:2]([F:1])=[CH:3][C:4]=1[N+:27]([O-:29])=[O:28])(=[O:10])=[O:9])=[O:34]
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 6586Methyl chloroformateHCID 24758Sodium hydrideHCID 516892Sodium BicarbonateHCID 86713325methyl (1aRS,7bSR)-5-(4-fluoro-2-nitrobenzenesulfonylamino)-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate2 回

生成物 1

HCID 86713324methyl (1aRS,7bSR)-5-[N-(methoxycarbonyl)-N-(4-fluoro-2-nitrobenzene-sulfonyl)amino]-1,1a,2,7b-tetrahydro-cyclopropa[c]chromene-4-carboxylate
収率 70.3%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

A solution of methyl (1aRS,7bSR)-5-(4-fluoro-2-nitrobenzenesulfonylamino)-1,1a,2,7b-tetrahydro-cyclopropa[c]chromene-4-carboxylate (Intermediate 112, 0.25 g) in THF (10 mL) was added dropwise with stirring to a cooled suspension of sodium hydride (0.1 g) in THF (5 mL) at 0° C. On completion of the addition, the mixture was stirred at room temperature for 30 minutes. Methyl chloroformate (0.3 g) was added dropwise and the mixture was stirred at room temperature for 1.5 hours. Saturated aqueous sodium bicarbonate was added and the mixture was extracted with ethyl acetate, dried (Na2SO4) and filtered. The filtrate was evaporated to dryness and the residue was purified by chromatography on silica, eluting with a mixture of ethyl acetate and petroleum ether to give methyl (1aRS,7bSR)-5-[N-(methoxycarbonyl)-N-(4-fluoro-2-nitrobenzenesulfonyl)amino]-1,1a,2,7b-tetrahydrocyclopropa-[c]chromene-4-carboxylate (0.2 g) as a white solid.

後処理

  1. additionOn completion of the addition
  2. stirringthe mixture was stirred at room temperature for 1.5 hours
  3. extractionthe mixture was extracted with ethyl acetate
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. customThe filtrate was evaporated to dryness
  7. customthe residue was purified by chromatography on silica
  8. washeluting with a mixture of ethyl acetate and petroleum ether

出典と根拠

ORDレコード
ord-9d28778eca134915be809a63d91763c3
出典データセット
uspto-grants-2016_03
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09290472B2

反応ノート

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