Tributylphosphine → methyl [(3S)-6-({2',3',5',6'-tetramethyl-4'-[3-(methylsulfonyl)propoxy]biphenyl-3-yl}methoxy)-2,3-dihydro-1-benzofuran-3-yl]acetate

HRID 15668ノート

反応式

HRID 15668 の反応式
[CH3:1][O:2][C:3](=[O:15])[CH2:4][C@H:5]1[C:9]2[CH:10]=[CH:11][C:12]([OH:14])=[CH:13][C:8]=2[O:7][CH2:6]1.[CH3:16][C:17]1[C:22]([CH3:23])=[C:21]([O:24][CH2:25][CH2:26][CH2:27][S:28]([CH3:31])(=[O:30])=[O:29])[C:20]([CH3:32])=[C:19]([CH3:33])[C:18]=1[C:34]1[CH:39]=[CH:38][CH:37]=[C:36]([CH2:40]O)[CH:35]=1.C(P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1(C)C=CC=CC=1.CCCCCC>[CH3:1][O:2][C:3](=[O:15])[CH2:4][C@H:5]1[C:9]2[CH:10]=[CH:11][C:12]([O:14][CH2:40][C:36]3[CH:35]=[C:34]([C:18]4[C:17]([CH3:16])=[C:22]([CH3:23])[C:21]([O:24][CH2:25][CH2:26][CH2:27][S:28]([CH3:31])(=[O:29])=[O:30])=[C:20]([CH3:32])[C:19]=4[CH3:33])[CH:39]=[CH:38][CH:37]=3)=[CH:13][C:8]=2[O:7][CH2:6]1

参加物

7

反応物 4

HCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 53393313(S)-Methyl 2-(6-hydroxy-2,3-dihydrobenzofuran-3-yl)acetateHCID 59342583{2',3',5',6'-Tetramethyl-4'-[3-(methylsulfonyl)propoxy]biphenyl-3-yl}methanol

生成物 1

HCID 59342570methyl [(3S)-6-({2',3',5',6'-tetramethyl-4'-[3-(methylsulfonyl)propoxy]biphenyl-3-yl}methoxy)-2,3-dihydro-1-benzofuran-3-yl]acetate収率 82%

試薬・触媒・溶媒 2

HCID 1140Toluene溶媒HCID 8058Hexane溶媒

実験手順

A solution of methyl[(3S)-6-hydroxy-2,3-dihydro-1-benzofuran-3-yl]acetate (0.208 g, 1.00 mmol), {2′,3′,5′,6′-tetramethyl-4′-[3-(methylsulfonyl)propoxy]biphenyl-3-yl}methanol (0.377 g, 1.00 mmol) and tributylphosphine (0.324 g, 1.60 mmol) in toluene (15 mL) was stirred, 1,1′-(azodicarbonyl)dipiperidine (0.404 g, 1.60 mmol) was added, and the mixture was stirred at room temperature for 1.5 hr under nitrogen atmosphere. Hexane (8 mL) was added to the reaction mixture, the precipitated insoluble substance was filtered off, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate:hexane=30:70-80:20) to give the title compound (0.462 g, yield 82%) as a colorless oil.

後処理

  1. filtrationthe precipitated insoluble substance was filtered off
  2. concentrationthe filtrate was concentrated under reduced pressure
  3. customThe residue was purified by silica gel column chromatography (ethyl acetate:hexane=30:70-80:20)

出典と根拠

ORDレコード
ord-d7bc070c8d0c446b9ab4fb5044fe6f98
出典データセット
uspto-grants-2010_06
特許番号
US07732626B2

反応ノート

読み込み中…