Methanol → 4-[1-(1,3-Benzodioxol-5-ylmethyl)pyrrolidin-3-ylidene]but-2-enoic acid

Reaction equation

[CH3:24][OH:25].[Li+:26].[O:1]1[CH2:2][O:3][c:4]2[c:5]1[cH:6][cH:7][c:8]([CH2:10][N:11]1[CH2:12][C:13](=[CH:16][CH:17]=[CH:18][C:19](=[O:20])[O:21][CH2:22][CH3:23])[CH2:14][CH2:15]1)[cH:9]2.[OH-:27].[OH2:28]>>[O:1]1[CH2:2][O:3][c:4]2[c:5]1[cH:6][cH:7][c:8]([CH2:10][N:11]1[CH2:12][C:13](=[CH:16][CH:17]=[CH:18][C:19](=[O:20])[OH:21])[CH2:14][CH2:15]1)[cH:9]2