Diethyl Ether → 1-(2,2,3,4,6,7-Hexamethyl-3-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-4-(4-methoxyphenyl)piperazine

HRID 1850402ノート

反応式

HRID 1850402 の反応式
[CH2:1](OCC)C.C[Li].O1CCCC1.[CH3:13][O:14][C:15]1[CH:20]=[CH:19][C:18]([N:21]2[CH2:26][CH2:25][N:24]([C:27]3[C:28]([CH3:41])=[C:29]([CH3:40])[C:30]4[O:34][C:33]([CH3:36])([CH3:35])[C:32](=[O:37])[C:31]=4[C:38]=3[CH3:39])[CH2:23][CH2:22]2)=[CH:17][CH:16]=1>C(OCC)(=O)C.O>[CH3:13][O:14][C:15]1[CH:16]=[CH:17][C:18]([N:21]2[CH2:22][CH2:23][N:24]([C:27]3[C:28]([CH3:41])=[C:29]([CH3:40])[C:30]4[O:34][C:33]([CH3:36])([CH3:35])[C:32]([CH3:1])([OH:37])[C:31]=4[C:38]=3[CH3:39])[CH2:25][CH2:26]2)=[CH:19][CH:20]=1

参加物

7

反応物 4

HCID 3283Diethyl EtherHCID 8028TetrahydrofuranHCID 229355955-[4-(4-methoxyphenyl)piperazin-1-yl]-2,2,4,6,7-pentamethyl-1-benzofuran-3(2H)-oneHCID 178418348HCID 178418348、化合物

生成物 1

HCID 229356081-(2,2,3,4,6,7-Hexamethyl-3-hydroxy-2,3-dihydro-1-benzofuran-5-yl)-4-(4-methoxyphenyl)piperazine収率 96.3%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A diethylether solution (5.60 mL, 6.38 mmol) containing 1.14 M methyl lithium was added dropwise to a solution of tetrahydrofuran (20 mL) containing 5-[4-(4-methoxyphenyl)piperazin-1-yl]-2,2,4,6,7-pentamethyl-1-benzofuran-3(2H)-one (2.00 g, 5.06 mmol) synthesized in Reference Example 42 under ice-cooling condition, and the mixture was stirred for 10 minutes. Water was added to the reaction solution, and extraction was performed using ethyl acetate. The organic layer was washed with water and saturated saline, and then dried using anhydrous sodium sulfate. The solvent was removed under reduced pressure, and the obtained residue was crystallized using hexane to give 2.00 g of the title compound (yield: 96%).

後処理

  1. customsynthesized in Reference Example 42 under ice-
  2. temperaturecooling condition
  3. washThe organic layer was washed with water and saturated saline
  4. customdried
  5. customThe solvent was removed under reduced pressure
  6. customthe obtained residue was crystallized

出典と根拠

ORDレコード
ord-240b0de74ec547e7b21ca45553556862
出典データセット
uspto-grants-2015_02
特許番号
US08957069B2

反応ノート

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