Pyridine → methyl (1aRS,7bSR)-5-(4-fluoro-2-nitrobenzenesulfonylamino)-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate

HRID 927992ノート

反応式

HRID 927992 の反応式
[NH2:1][C:2]1[C:11]([C:12]([O:14][CH3:15])=[O:13])=[C:10]2[C:5]([CH:6]3[CH2:16][CH:7]3[CH2:8][O:9]2)=[CH:4][CH:3]=1.[F:17][C:18]1[CH:23]=[CH:22][C:21]([S:24](Cl)(=[O:26])=[O:25])=[C:20]([N+:28]([O-:30])=[O:29])[CH:19]=1.N1C=CC=CC=1>C(Cl)Cl>[F:17][C:18]1[CH:23]=[CH:22][C:21]([S:24]([NH:1][C:2]2[C:11]([C:12]([O:14][CH3:15])=[O:13])=[C:10]3[C:5]([CH:6]4[CH2:16][CH:7]4[CH2:8][O:9]3)=[CH:4][CH:3]=2)(=[O:26])=[O:25])=[C:20]([N+:28]([O-:30])=[O:29])[CH:19]=1

参加物

5

反応物 3

HCID 1049PyridineHCID 27590464-Fluoro-2-nitrobenzene-1-sulfonyl chlorideHCID 86713293Methyl 5-amino-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate2 回

生成物 1

HCID 86713325methyl (1aRS,7bSR)-5-(4-fluoro-2-nitrobenzenesulfonylamino)-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate収率 57.1%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

A mixture of methyl (1aRS,7bSR)-5-amino-1,1a,2,7b-tetrahydrocyclopropa-[c]chromene-4-carboxylate (Intermediate 42, 0.1 g), 4-fluoro-2-nitrobenzenesulfonyl chloride (0.115 g) and pyridine (2 mL) in DCM (5 mL) was stirred at room temperature overnight. The mixture was concentrated under vacuum and the residue was partitioned between ethyl acetate and water. The organic layer was dried (Na2SO4) and filtered and the filtrate was evaporated to dryness. The residue was purified by chromatography on silica, eluting with a mixture of ethyl acetate and petroleum ether (20%) to give methyl (1aRS,7bSR)-5-(4-fluoro-2-nitrobenzenesulfonylamino)-1,1a,2,7b-tetrahydrocyclopropa[c]chromene-4-carboxylate (0.11 g) as a yellow oil.

後処理

  1. concentrationThe mixture was concentrated under vacuum
  2. customthe residue was partitioned between ethyl acetate and water
  3. dry with materialThe organic layer was dried (Na2SO4)
  4. filtrationfiltered
  5. customthe filtrate was evaporated to dryness
  6. customThe residue was purified by chromatography on silica
  7. washeluting with a mixture of ethyl acetate and petroleum ether (20%)

出典と根拠

ORDレコード
ord-496fb99a84044b1e8924143a7f6243a2
出典データセット
uspto-grants-2016_03
特許番号
US09290472B2

反応ノート

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