1'-(diphenylmethyl)-5-hydroxyspiro[1-benzofuran-3,3'-indol]-2'(1'H)-one → 1'-(diphenylmethyl)-5-(2-methoxyethoxy)spiro[1-benzofuran-3,3'-indol]-2'(1'H)-one
Reaktionsgleichung
[C:1]1([CH:7]([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[N:8]2[C:16]3[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=3)[C:10]3([C:20]4[CH:21]=[C:22]([OH:25])[CH:23]=[CH:24][C:19]=4[O:18][CH2:17]3)[C:9]2=[O:26])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C1(C(C2C=CC=CC=2)N2C3C(=CC=CC=3)[C:42]3(C4C=CC(O)=C[C:51]=4[O:50][CH2:49]3)C2=O)C=CC=CC=1>>[C:27]1([CH:7]([C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)[N:8]2[C:16]3[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=3)[C:10]3([C:20]4[CH:21]=[C:22]([O:25][CH2:42][CH2:49][O:50][CH3:51])[CH:23]=[CH:24][C:19]=4[O:18][CH2:17]3)[C:9]2=[O:26])[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1Komponenten
3
Versuchsvorschrift
Following the procedure as described in EXAMPLE 2.68 and making non-critical variations using 1′-(diphenylmethyl)-5-hydroxyspiro[1-benzofuran-3,3′-indol]-2′(1′H)-one to replace 1′-(diphenylmethyl)-6-hydroxyspiro[1-benzofuran-3,3′-indol]-2′(1′H)-one, 1′-(diphenylmethyl)-5-(2-methoxyethoxy)spiro[1-benzofuran-3,3′-indol]-2′(1′H)-one was obtained (90%) as a colorless solid: 1H NMR (300 MHz, CDCl3) δ7.44-7.25 (m, 10H), 7.15-7.07 (m, 1H), 7.04 (s, 1H), 7.00-6.90 (m, 2H), 6.58-6.44 (m, 3H), 6.41-6.33 (m, 1H), 4.86 (ABq, 2H), 4.15-3.98 (m, 2H), 3.75-3.66 (m, 2H), 3.41 (s, 3H).