L. Grondard et al., CONVENIENT SYNTHESES OF RACEMIC 2-(3-NITROPHENYL)PROPANOIC ACID AND 2-(3-AMINOPHENYL)PROPANOIC ACID, Synthetic communications, 27(3), 1997, pp. 425-430
2-(4-Chlorophenyl)propanoic acid 1 is transformed to 2-(4-chloro-3-nit
rophenyl) propanoic acid 2 (94% yield). Acid 2 can be converted to 2-(
3-nitrophenyl)propanoic acid 3 (70% yield) or to 2-(3-aminophenyl) pro
panoic acid 4 (80% yield).