Tetrahydrofuran → 5,6-Dihydro-4-hydroxy-6-phenyl-3,6-bis(2-phenylethyl)-2H-pyran-2-one

Reaction equation

[OH:1][C:2]1[CH2:7][C:6]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)([CH2:8][CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[O:5][C:4](=[O:22])[CH:3]=1.C(Cl)(=O)[CH2:24][CH2:25][C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1.C(N(CC)CC)C.C1COCC1>CN(C1C=CN=CC=1)C.C1(C)C=CC=CC=1>[OH:1][C:2]1[CH2:7][C:6]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)([CH2:8][CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[O:5][C:4](=[O:22])[C:3]=1[CH2:24][CH2:25][C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1