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2,6-Lutidine → [4-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-methyl-but-2-enyloxymethyl]-phosphonic acid

HRID 272122
ノート
印刷プレビュー

反応式

HRID 272122 の反応式
C([O:4][P:5]([CH2:11][O:12][CH2:13][C:14]([CH3:31])=[CH:15][CH2:16][C:17]1[C:18]([OH:30])=[C:19]2[C:23](=[C:24]([CH3:28])[C:25]=1[O:26][CH3:27])[CH2:22][O:21][C:20]2=[O:29])(=[O:10])[O:6]C(C)C)(C)C.N1C(C)=CC=CC=1C.C[Si](Br)(C)C>C(#N)C>[OH:30][C:18]1[C:17]([CH2:16][CH:15]=[C:14]([CH3:31])[CH2:13][O:12][CH2:11][P:5](=[O:4])([OH:10])[OH:6])=[C:25]([O:26][CH3:27])[C:24]([CH3:28])=[C:23]2[C:19]=1[C:20](=[O:29])[O:21][CH2:22]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 79372,6-LutidineHCID 76113BromotrimethylsilaneHCID 76541024[4-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-methyl-but-2-enyloxymethyl]-phosphonic acid diisopropyl ester

生成物 1

HCID 67010219[4-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-methyl-but-2-enyloxymethyl]-phosphonic acid

試薬・触媒・溶媒 1

HCID 6342
Acetonitrile
溶媒

実験手順

To a solution of [4-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-methyl-but-2-enyloxymethyl]-phosphonic acid diisopropyl ester (25 mg, 0.055 mmol) and 2,6-lutidine (0.18 mL, 1.65 mmol) in acetonitrile was added trimethylsilyl bromide (0.126 mL, 1.1 mmol) at 0° C. The mixture was allowed to warm to room temperature and stirred for 4 h. The reaction was quenched with methanol at 0° C., and the resulting mixture was concentrated. The residue was purified by preparative reverse-phase HPLC to afford, after removal of the solvent, [4-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-methyl-but-2-enyloxymethyl]-phosphonic acid as an oil (17 mg, 83%); 1H NMR (300 MHz, CD3OD) δ 1.81 (s, 3H), 2.06 (s, 3H), 3.40 (d, J=6.6 Hz, 2H), 3.50 (d, 2H), 3.77 (s, 3H), 3.97 (s, 2H), 5.20 (s, 2H), 5.47 (t, J=6.6 Hz, 1H); MS (m/z) 371 [M−H]−.

後処理

  1. customThe reaction was quenched with methanol at 0° C.
  2. concentrationthe resulting mixture was concentrated
  3. customThe residue was purified by preparative reverse-phase HPLC
  4. customto afford
  5. customafter removal of the solvent, [4-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-methyl-but-2-enyloxymethyl]-phosphonic acid as an oil (17 mg, 83%)

出典と根拠

ORDレコード
ord-10ca4ad44693478cba82c210067e592d
出典データセット
uspto-grants-2008_11
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07452901B2

反応ノート

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