Process for the preparation of 2-(4'-nitrophenyl)-propionic acid

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

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C07C 5115

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042425247

ABSTRACT:
The present invention concerns a process for the preparation of 2-(4'-nitrophenyl)-propionic acid of the formula (I): ##STR1## More particularly, this invention relates to a process for the preparation of 2-(4'-nitrophenyl)-propionic acid (I) starting from para-nitroethylbenzene (PNEB) by carboxylation in the presence of alkaline phenates (Na and K).
The 2-(4'-nitrophenyl)-propionic acid (I) thus obtained finds a useful application as an intermediate for the preparation of chemical products.
For instance, acid (I) may be hydrogenated catalytically until obtaining the corresponding amino-derivative which is then condensed with ortho-cyanobenzyl-bromides in order to give isoindoline (as described in Belgian Pat. No. 774985).

REFERENCES:
patent: 3557196 (1971-01-01), Bottaccio
patent: 3734955 (1973-05-01), Patmore
patent: 3976677 (1976-08-01), Bottaccio
Bielstein, Band IX, p. 526.
Bielstein, Band IX (I), p. 207.

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