Ammonium → Ethyl 2-cyano-3,3-dimethylpent-4-enoate

Reaction equation

[C:15](#[N:16])[CH2:17][C:18](=[O:19])[O:20][CH2:21][CH3:22].[C:6]([O:7][C:10]([CH:11]=[CH2:12])([CH3:13])[CH3:14])(=[O:8])[CH3:9].[CH:1]([Cl:2])([CH3:3])[CH3:4].[Cl-:25].[H-:23].[Mg:5].[NH4+:26].[Na+:24].[O:27]1[CH2:28][CH2:29][CH2:30][CH2:31]1>>[C:10]([CH:11]=[CH2:12])([CH3:13])([CH3:14])[CH:17]([C:15]#[N:16])[C:18](=[O:19])[O:20][CH2:21][CH3:22]