(2Z)-4-{[tert-butyl(dimethyl)silyl]oxy}-2-[4-(methylsulfonyl)phenyl]-3-phenylbut-2-enyl acetate → (2Z)-4-hydroxy-2-[4-(methylsulfonyl)phenyl]-3-phenylbut-2-enyl acetate

HRID 1437598Notes

Reaction equation

HRID 1437598 reaction equation
[C:1]([O:4][CH2:5]/[C:6](/[C:23]1[CH:28]=[CH:27][C:26]([S:29]([CH3:32])(=[O:31])=[O:30])=[CH:25][CH:24]=1)=[C:7](/[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)\[CH2:8][O:9][Si](C(C)(C)C)(C)C)(=[O:3])[CH3:2]>CC#N.C1(C)C=CC=CC=1>[C:1]([O:4][CH2:5]/[C:6](/[C:23]1[CH:24]=[CH:25][C:26]([S:29]([CH3:32])(=[O:31])=[O:30])=[CH:27][CH:28]=1)=[C:7](/[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)\[CH2:8][OH:9])(=[O:3])[CH3:2]

Participants

4

Reactant 1

HCID 58787781(2Z)-4-{[tert-butyl(dimethyl)silyl]oxy}-2-[4-(methylsulfonyl)phenyl]-3-phenylbut-2-enyl acetate

Product 1

HCID 58787789(2Z)-4-hydroxy-2-[4-(methylsulfonyl)phenyl]-3-phenylbut-2-enyl acetateYield 99.9%

Reagents, catalysts & solvents 2

HCID 1140TolueneSolventHCID 6342AcetonitrileSolvent

Procedure

To a solution of 50.5 g of (2Z)-4-{[tert-butyl(dimethyl)silyl]oxy}-2-[4-(methylsulfonyl)phenyl]-3-phenylbut-2-enyl acetate in 125 mL of MeCN, 10 mL of PyHF was added and the resulted mixture was stirred at rt for 1.5 h. The reaction mixture was diluted with 600 mL of toluene and then loaded on silica gel column and eluted with EtOAc. The solvent was evaporated to afford 38.3 g of the titled compound. 1H NMR (acetone-d6, 500 MHz): δ 7.68 (d, 2H), 7.32 (d, 2H), 7.15-7.00 (m, 5H), 5.20 (s, 2H), 4.62 (d, 2H), 4.09 (t, 1H, OH), 3.02 (s, 3H), 1.92 (s, 3H).

Workup

  1. washeluted with EtOAc
  2. customThe solvent was evaporated

Sources & evidence

ORD record
ord-7e0be04b47bb47d98519ae00bba8f224
Source dataset
uspto-grants-2009_11
Patent number
US07622502B2

Reaction notes

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