p-Toluenesulfonic acid → 1-{5-[2-(3,4-Bis-hydroxymethyl-phenyl)ethyl]-2-thienyl}-1-propanone
反応式
[CH2:1]([C:3]1([C:8]2[S:12][C:11]([CH2:13][CH2:14][C:15]3[CH:20]=[CH:19][C:18]([CH2:21][OH:22])=[C:17]([CH2:23][OH:24])[CH:16]=3)=[CH:10][CH:9]=2)OCC[O:4]1)[CH3:2].C1(C)C=CC(S(O)(=O)=O)=CC=1>CC(C)=O.O>[OH:24][CH2:23][C:17]1[CH:16]=[C:15]([CH2:14][CH2:13][C:11]2[S:12][C:8]([C:3](=[O:4])[CH2:1][CH3:2])=[CH:9][CH:10]=2)[CH:20]=[CH:19][C:18]=1[CH2:21][OH:22]参加物
4
実験手順
In a manner similar to that of Example 6(g), by reaction of 8.7 g (23 mmol) of (4-{2-[5-(2-ethyl-[1,3]dioxolan-2-yl)-2-thienyl]ethyl}-2-hydroxymethylphenyl)methanol with a solution of para-toluenesulphonic acid in an acetone/water mixture, the desired product is obtained in the form of a white powder (m=5.41 g; Y=71%).