Sodium Ion → Ethyl 5-carboethoxy-2-diethylphosphono-2-methylpent-4-enoate

Reaction equation

[Br:1][CH2:2][CH:3]=[CH:4][C:5](=[O:6])[O:7][CH2:8][CH3:9].[CH2:11]([CH3:12])[O:13][P:14](=[O:15])([O:16][CH2:17][CH3:18])[CH:19]([C:20](=[O:21])[O:22][CH2:23][CH3:24])[CH3:25].[H-:26].[Na+:27].[Na:10].[O:28]1[CH2:29][CH2:30][O:31][CH2:32][CH2:33]1>>[CH2:2]([CH:3]=[CH:4][C:5](=[O:6])[O:7][CH2:8][CH3:9])[C:19]([P:14]([O:13][CH2:11][CH3:12])(=[O:15])[O:16][CH2:17][CH3:18])([C:20](=[O:21])[O:22][CH2:23][CH3:24])[CH3:25]