Benzaldehyde → HCID 3054950, compound
Reaction equation
[O:1]=[C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[C:8]([CH2:11][C:12]([OH:14])=[O:13])[CH:9]=2)[CH2:4][CH2:3]1.[OH-].[K+].[CH:17](=O)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1>CCO>[CH:17](=[C:3]1[C:2](=[O:1])[C:10]2[C:5](=[CH:6][CH:7]=[C:8]([CH2:11][C:12]([OH:14])=[O:13])[CH:9]=2)[CH2:4]1)[C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
3-Oxo-5-indaneacetic acid (4.94 g, 0.026 mol) was added to a stirred solution of 85% KOH (3.43 g, 0.052 mol) in EtOH (73 ml) containing benzaldehyde (2.76 g, 0.026 mol) at 10° C. and stirred for 40 minutes. The potassium salt of the precipitated product was filtered off, dissolved in H2O (100 ml) was acidified with conc. HCl to give the title product, m.p. 202°-4° C. (EtOH).