AROMATIC CARBOXYLIC ACIDS, ACID HALIDES THEREOF AND PROCESSES FOR PREPARING BOTH

WIPO Patent Application WO/2002/042251

A1

Novel aromatic carboxylic acids and acid halides thereof, useful as raw materials for polymers, particularly heat-resistant condensation polymers; and processes for preparing the acids or the halides. The carboxylic acids and the acid halides are represented by the general formula (1) and (2) respectively: (1) (2) [wherein A is -C$m(Z)C-R?1¿ or a group represented by the general formula (3): (3) (wherein R?1¿ is hydrogen, alkyl, or an aromatic group; and R?2¿ is alkyl or an aromatic group); and X is halogeno]. According to the processes of the invention, the above compounds can be efficiently prepared from dialkyl isophthalate derivatives and acetylene derivatives via specific steps.

OKANUMA MASAKO (JP)
ISHIDA YUICHI (JP)
HASE YOKO (JP)
HIGASHIDA NOBUHIRO (JP)
ENOKI TAKASHI (JP)

PCT/JP2001/010287

May 30, 2002

November 26, 2001

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SUMITOMO BAKELITE CO (JP)
OKANUMA MASAKO (JP)
ISHIDA YUICHI (JP)
HASE YOKO (JP)
HIGASHIDA NOBUHIRO (JP)
ENOKI TAKASHI (JP)

C07C63/64; C07C65/28; (IPC1-7): C07C63/15; C07C51/09; C07C51/60; C07C63/331; C07C63/64; C07C63/66; C07C63/72; C07C63/74; C07C65/28

JPS62292834A	1987-12-19
US4587312A	1986-05-06
US20020013443A1	2002-01-31

CRISP, GEOFFREY T. ET AL.: "Palladium-catalyzed coupling of terminal alkynes with aryl halides aided by catalytic zinc", J. ORGANOMET. CHEM., vol. 570, no. 2, 1998, pages 219 - 224, XP004142851
See also references of EP 1346975A4

Uchiyama, Mitsuru (Kandasudacho 1-chome Chiyoda-ku, Tokyo, JP)

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