Heptane → 3-{4-[2-(4-Tert-butylcarbamoyloxyphenyl)ethoxy]phenyl}-2-ethoxypropanoic acid ethyl ester

反応式

[C:1]([N:5]=[C:6]=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH2:8]([O:10][C:11](=[O:33])[CH:12]([O:30][CH2:31][CH3:32])[CH2:13][C:14]1[CH:19]=[CH:18][C:17]([O:20][CH2:21][CH2:22][C:23]2[CH:28]=[CH:27][C:26]([OH:29])=[CH:25][CH:24]=2)=[CH:16][CH:15]=1)[CH3:9].CCCCCCC>C1(C)C=CC=CC=1>[CH2:8]([O:10][C:11](=[O:33])[CH:12]([O:30][CH2:31][CH3:32])[CH2:13][C:14]1[CH:19]=[CH:18][C:17]([O:20][CH2:21][CH2:22][C:23]2[CH:24]=[CH:25][C:26]([O:29][C:6](=[O:7])[NH:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[CH:27][CH:28]=2)=[CH:16][CH:15]=1)[CH3:9]

参加物

実験手順

tert-Butyl isocyanate (0.14 g; 1.4 mmole) was slowly added to a solution of 2-ethoxy-3-{4-[2-(4-hydroxyphenyl)ethoxy]phenyl}propanoic acid ethyl ester (described in Example 26b) (0.5 g; 1.4 mmole) in toluene (5 ml) and thereafter the reaction mixture was stirred over night. The crude mixture was purified by chromatography on silica gel using ethyl acetate:heptane (gradient 1.25-80% ethyl acetate) as eluant to give 0.13 g (yield 20%) of 3-{4-[2-(4-tert-butylcarbamoyloxyphenyl)ethoxy]phenyl}-2-ethoxypropanoic acid ethyl ester.