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Sodium hydride → methyl 4-(2-tert-butoxy-2-oxoethyl)-6-cyclohexyl-5-(4-chlorophenyl)-4H-thieno[3,2-b]pyrrole-2-carboxylate

HRID 505811
ノート
印刷プレビュー

反応式

HRID 505811 の反応式
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[NH:12][C:11]3[CH:13]=[C:14]([C:16]([O:18][CH3:19])=[O:17])[S:15][C:10]=3[C:9]=2[CH:20]2[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]2)=[CH:4][CH:3]=1.[H-].[Na+].Br[CH2:29][C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31]>CN(C=O)C.CCOC(C)=O>[C:33]([O:32][C:30](=[O:31])[CH2:29][N:12]1[C:8]([C:5]2[CH:4]=[CH:3][C:2]([Cl:1])=[CH:7][CH:6]=2)=[C:9]([CH:20]2[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]2)[C:10]2[S:15][C:14]([C:16]([O:18][CH3:19])=[O:17])=[CH:13][C:11]1=2)([CH3:36])([CH3:35])[CH3:34]
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 3

HCID 24758Sodium hydrideHCID 79177tert-Butyl bromoacetateHCID 68472408methyl 5-(4-chlorophenyl)-6-cyclohexyl-4H-thieno[3,2-b]pyrrole-2-carboxylate

生成物 1

HCID 68467870methyl 4-(2-tert-butoxy-2-oxoethyl)-6-cyclohexyl-5-(4-chlorophenyl)-4H-thieno[3,2-b]pyrrole-2-carboxylate収率 93%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide
溶媒
HCID 8857Ethyl Acetate溶媒

実験手順

A solution (0.2 M) of methyl 5-(4-chlorophenyl)-6-cyclohexyl-4H-thieno[3,2-b]pyrrole-2-carboxylate (prepared as described in example 13, step 4) in DMF was treated with NaH (2 eq., 60% dispersion in mineral oil), and the suspension was stirred at RT for 30 min, then tert-butyl bromoacetate (3 eq.) was added. The reaction mixture was heated at 50° C. for 2 h then cooled down and diluted with AcOEt. The organic phase was washed sequentially with aqueous HCl (1 N), aqueous NaHCO3 (saturated solution) and brine and dried. Evaporation of the solvent gave a residue that was purified by flash chromatography on silica gel (1:9 AcOEt/petroleum ether) to afford the title compound (93%).

後処理

  1. temperatureThe reaction mixture was heated at 50° C. for 2 h
  2. temperaturethen cooled down
  3. washThe organic phase was washed sequentially with aqueous HCl (1 N), aqueous NaHCO3 (saturated solution) and brine
  4. customdried
  5. customEvaporation of the solvent
  6. customgave a residue that
  7. customwas purified by flash chromatography on silica gel (1:9 AcOEt/petroleum ether)

出典と根拠

ORDレコード
ord-0293b1a5392147a4b1759ac741c500f9
出典データセット
uspto-grants-2010_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07781431B2

反応ノート

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