OC(CO)CCCCOC1C=CC(OC)=CC=1.[C:18]([O:25][CH2:26][CH:27]1[CH2:31][O:30]C(C)(C)[O:28]1)(=[O:24])[CH2:19][CH2:20][C:21]([CH3:23])=[O:22]>>[C:18]([O:25][CH2:26][CH:27]([OH:28])[CH2:31][OH:30])(=[O:24])[CH2:19][CH2:20][C:21]([CH3:23])=[O:22]Synthesis in analogy to 1c from (2,2-dimethyl-1,3-dioxolan-4-yl)methyl levulinate (27a);
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