(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
反応式
[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]参加物
4
実験手順
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 hr. 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 M Hz): 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, 3 H),