Diethyl fumarate → Diethyl 4-{[tert-butyl(dimethyl)silyl]oxy}-3-(4-fluorophenyl)cyclohex-4-ene-1,2-dicarboxylate
Reaction equation
[C:1]([Si:5]([O:8]/[C:9](=[CH:12]\[C:13]1[CH:18]=[CH:17][C:16]([F:19])=[CH:15][CH:14]=1)/[CH:10]=[CH2:11])([CH3:7])[CH3:6])([CH3:4])([CH3:3])[CH3:2].[C:20]([O:29][CH2:30][CH3:31])(=[O:28])/[CH:21]=[CH:22]/[C:23]([O:25][CH2:26][CH3:27])=[O:24]>>[Si:5]([O:8][C:9]1[CH:12]([C:13]2[CH:18]=[CH:17][C:16]([F:19])=[CH:15][CH:14]=2)[CH:21]([C:20]([O:29][CH2:30][CH3:31])=[O:28])[CH:22]([C:23]([O:25][CH2:26][CH3:27])=[O:24])[CH2:11][CH:10]=1)([C:1]([CH3:2])([CH3:3])[CH3:4])([CH3:7])[CH3:6]Participants
3
Procedure
To a solution of 37 g (˜80% pure, 133.1 mmol, 1 equiv.) of 1E and 1Z-tert-butyl{[1-(4-fluorobenzylidene)prop-2-en-1-yl]oxy}dimethylsilane (intermediate step C) and 17 mL (18 g, 104.6 mmol) diethyl (2E)-but-2-enedioate in 200 mL xylenes under nitrogen atmosphere was heated at 160° C. for 5 hr then cooled to RT. The solvent was evaporated under vacuum to give an oil which was used without further purification.
Workup
- customThe solvent was evaporated under vacuum