2,6-Lutidine → [1-Cyano-5-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-3-methyl-pent-3-enyl]-phosphonic Acid

HRID 910526ノート

反応式

HRID 910526 の反応式
C([O:3][P:4]([CH:9]([C:35]#[N:36])[CH2:10][C:11]([CH3:34])=[CH:12][CH2:13][C:14]1[C:15]([O:27]CC[Si](C)(C)C)=[C:16]2[C:20](=[C:21]([CH3:25])[C:22]=1[O:23][CH3:24])[CH2:19][O:18][C:17]2=[O:26])(=[O:8])[O:5]CC)C.C[Si](Br)(C)C.N1C(C)=CC=CC=1C>C(#N)C>[C:35]([CH:9]([P:4](=[O:3])([OH:5])[OH:8])[CH2:10][C:11]([CH3:34])=[CH:12][CH2:13][C:14]1[C:15]([OH:27])=[C:16]2[C:20](=[C:21]([CH3:25])[C:22]=1[O:23][CH3:24])[CH2:19][O:18][C:17]2=[O:26])#[N:36]

参加物

5

反応物 3

HCID 79372,6-LutidineHCID 76113BromotrimethylsilaneHCID 72563597(1-Cyano-5-[6-methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-3-methyl-pent-3-enyl}-phosphonic acid diethyl ester

生成物 1

HCID 67010408[1-Cyano-5-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-3-methyl-pent-3-enyl]-phosphonic Acid収率 60.5%

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

実験手順

To a solution of {1-cyano-5-[6-methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-3-methyl-pent-3-enyl}-phosphonic acid diethyl ester (35 mg, 0.065 mmol) in acetonitrile (2 mL) was added TMSBr (180 μL, 1.38 mmol) and 2,6-lutidine (160 μL, 1.38 mmol). The reaction solution was allowed stir at room temperature for one hour before quenching with MeOH. The reaction mixture was dried under reduced pressure and the residue was purified by RP HPLC using a C18 column with a gradient of H2O, 0.1% TFA-acetonitrile, 0.1% TFA to provide 15 mg (60%) of the desired product. 1H NMR (300 MHz, CD3OD) δ 1.86 (s, 3H), 2.15 (s, 3H), 2.38-2.57 (m, 2H), 3.17-3.28 (m, 1H), 3.44 (d, J=7.2 Hz, 2H), 3.80 (s, 3H), 5.25 (s, 2H), 5.47 (t, J=7.2 Hz, 1H) ppm; 31P (121.4 MHz, CD3OD) δ 15.28 ppm; MS (m/z) 380 [M−H]−, 382 [M+H]+.

後処理

  1. custombefore quenching with MeOH
  2. customThe reaction mixture was dried under reduced pressure
  3. customthe residue was purified by RP HPLC

出典と根拠

ORDレコード
ord-e664dbe4cbf64f5aa7c8376d9551212d
出典データセット
uspto-grants-2011_09
特許番号
US08022083B2

反応ノート

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