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Ammonium Chloride → 1-(4-{1-Ethyl-1-[3-methyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-propyl}-2-methyl-phenoxy)-3,3-dimethyl-butan-2-ol

HRID 546857
ノート
印刷プレビュー

反応式

HRID 546857 の反応式
[CH2:1]([C:3]([C:22]1[CH:35]=[CH:34][C:25]([O:26][CH2:27][C:28](=[O:33])[C:29]([CH3:32])([CH3:31])[CH3:30])=[C:24]([CH3:36])[CH:23]=1)([C:6]1[CH:11]=[CH:10][C:9]([B:12]2[O:16][C:15]([CH3:18])([CH3:17])[C:14]([CH3:20])([CH3:19])[O:13]2)=[C:8]([CH3:21])[CH:7]=1)[CH2:4][CH3:5])[CH3:2].CCC(C)[BH-](C(C)CC)C(C)CC.[Li+].[Cl-].[NH4+]>O1CCCC1>[CH2:1]([C:3]([C:22]1[CH:35]=[CH:34][C:25]([O:26][CH2:27][CH:28]([OH:33])[C:29]([CH3:32])([CH3:31])[CH3:30])=[C:24]([CH3:36])[CH:23]=1)([C:6]1[CH:11]=[CH:10][C:9]([B:12]2[O:13][C:14]([CH3:19])([CH3:20])[C:15]([CH3:17])([CH3:18])[O:16]2)=[C:8]([CH3:21])[CH:7]=1)[CH2:4][CH3:5])[CH3:2]
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 25517Ammonium ChlorideHCID 3611392Lithium tri-s-butylborohydrideHCID 577089771-(4-{1-Ethyl-1-[3-methyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-propyl}-2-methyl-phenoxy)-3,3-dimethyl-butan-2-one

生成物 1

HCID 577089691-(4-{1-Ethyl-1-[3-methyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-propyl}-2-methyl-phenoxy)-3,3-dimethyl-butan-2-ol収率 83.3%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

A solution of 1-(4-{1-ethyl-1-[3-methyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-propyl}-2-methyl-phenoxy)-3,3-dimethyl-butan-2-one (Example 30-(2); 0.50 g, 1.02 mmol) in tetrahydrofuran (10 mL) was cooled to −78° C. A 1 M solution of L-selectride (R) in tetrahydrofuran (1.0 mL) was added dropwise, and the mixture was stirred for 20 minutes. A saturated aqueous ammonium chloride solution was added to the reaction mixture, followed by extraction with ethyl acetate. The organic layer was washed with water, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by silica gel chromatography (5% ethyl acetate/hexane) to give the title compound (0.42 g, 83%).

後処理

  1. extractionfollowed by extraction with ethyl acetate
  2. washThe organic layer was washed with water
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel chromatography (5% ethyl acetate/hexane)

出典と根拠

ORDレコード
ord-84181990a5c24b2c9dc31b543f371b67
出典データセット
uspto-grants-2011_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07935688B2

反応ノート

読み込み中…

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