| abstract |
The present invention discloses a process for preparing a nitrile compound, a carboxylic acid compound or a carboxylic acid ester compound represented by the formula (2): n n n n n n n n n n n n wherein R represents a cyano group, a carboxyl group or an ester group, R 1 and R 2 each represent a group which does not participate in the reaction, which may have a substituent, and R 1 and R 2 may be combined to each other to form a ring,n nwhich comprises subjecting an acetic acid compound represented by the formula (1):n n n n n n n n n n n n n n n n n wherein R, R 1 and R 2 have the same meanings as defined above,n nto decarboxylation in the presence of a metal catalyst. |