Trifluoroacetic acid → 2-{[4-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-methyl-but-2-enyl]-phenoxy-phosphinoyloxy}-propionic Acid Ethyl Ester

HRID 33020

Reaction equation

HRID 33020 reaction equation
[CH2:1]([O:3][C:4](=[O:42])[CH:5]([O:7][P:8]([CH2:17][C:18]([CH3:41])=[CH:19][CH2:20][C:21]1[C:22]([O:34]CC[Si](C)(C)C)=[C:23]2[C:27](=[C:28]([CH3:32])[C:29]=1[O:30][CH3:31])[CH2:26][O:25][C:24]2=[O:33])([O:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=[O:9])[CH3:6])[CH3:2].C(O)(C(F)(F)F)=O>C(Cl)Cl>[CH2:1]([O:3][C:4](=[O:42])[CH:5]([O:7][P:8]([CH2:17][C:18]([CH3:41])=[CH:19][CH2:20][C:21]1[C:22]([OH:34])=[C:23]2[C:27](=[C:28]([CH3:32])[C:29]=1[O:30][CH3:31])[CH2:26][O:25][C:24]2=[O:33])([O:10][C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=[O:9])[CH3:6])[CH3:2]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 765462022-({4-[6-Methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-2-methyl-but-2-enyl}-phenoxy-phosphinoyloxy)-propionic Acid Ethyl Ester

Product 1

HCID 765462032-{[4-(4-Hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydro-isobenzofuran-5-yl)-2-methyl-but-2-enyl]-phenoxy-phosphinoyloxy}-propionic Acid Ethyl EsterYield 90%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 2-({4-[6-methoxy-7-methyl-3-oxo-4-(2-trimethylsilanyl-ethoxy)-1,3-dihydro-isobenzofuran-5-yl]-2-methyl-but-2-enyl}-phenoxy-phosphinoyloxy)-propionic acid ethyl ester (24 mg, 0.039 mmol) in DCM (1 mL) was added TFA (0.5 mL) and the mixture was stirred at room temperature for 10 minutes. The reaction mixture was dried under reduced pressure and the residue was purified by RP-HPLC to provide 18 mg (90%) of the desired product as a clear oil. 1H NMR (300 MHz, CDCl3) δ 1.18-1.34 (m, 3H), 1.36-1.48 (dd, 3H), 2.02 (m, 3H), 2.17 (s, 3H), 2.78-2.98 (dd, 2H), 3.45 (m, 2H), 3.79 (s, 3H), 4.05-4.25 (m, 2H), 4.97 (m, 1H), 5.21 (s, 2H), 5.48 (t, J=7.2 Hz, 1H), 7.05-7.18 (m, 5H) ppm; 31P (121.4 MHz, CDCl3) δ 24.59, 26.13 ppm; MS (m/z) 517 [M−H]−, 519 [M+H]+.

Workup

  1. customThe reaction mixture was dried under reduced pressure
  2. customthe residue was purified by RP-HPLC

Sources & evidence

ORD record
ord-de2023d69da7437aa073aa35d45e9543
Source dataset
uspto-grants-2008_09
Patent number
US07427636B2

Linked notes

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