4-[[2-[4-(1,1'-Biphenyl)oxy]ethyl]oxy]-alpha-oxobenzeneacetic acid methyl ester → alpha-Oxo-4-[[2-(4-phenoxyphenoxy)ethyl]oxy]benzeneacetic acid
Reaction equation
C[O:2][C:3](=[O:28])[C:4](=[O:27])[C:5]1[CH:10]=[CH:9][C:8]([O:11][CH2:12][CH2:13][O:14][C:15]2[CH:20]=[CH:19][C:18](C3C=CC=CC=3)=[CH:17][CH:16]=2)=[CH:7][CH:6]=1>CO.[OH-].[Na+]>[O:27]=[C:4]([C:5]1[CH:6]=[CH:7][C:8]([O:11][CH2:12][CH2:13][O:14][C:15]2[CH:16]=[CH:17][C:18]([O:11][C:8]3[CH:9]=[CH:10][CH:5]=[CH:6][CH:7]=3)=[CH:19][CH:20]=2)=[CH:9][CH:10]=1)[C:3]([OH:2])=[O:28]Participants
4
Procedure
A mixture of 4-[[2-[4-(1,1'-biphenyl)oxy]ethyl]oxy]-alpha-oxobenzeneacetic acid methyl ester (0.8 g) in methanol (20 mL) and 0.5N sodium hydroxide (8 mL) was treated as in Example 19. Extraction provided solids which were crystallized from diethyl etherhexane to give 0.55 g of colorless alpha-oxo-4-[[2-(4-phenoxyphenoxy)ethyl]oxy]benzeneacetic acid, mp 124°-126° C.