A process for preparing a compound of formula (II): ##STR00001##
includes reacting a compound of formula (VIII): ##STR00002##
with a compound of formula (XIV): ##STR00003##

A process for preparing a compound of formula (II): ##STR00001##
includes reacting a compound of formula (VIII): ##STR00002##
with a compound of formula (XIV): ##STR00003##

Provided herein are compounds, pharmaceutical compositions comprising such compounds, and methods of using such compounds to treat diseases or disorders associated with HDAC1 and/or HDAC2 activity.

The invention relates to pyridazinone and pyridone compounds having formula (I) or (I′), and pharmaceutically acceptable salts, hydrates, and solvates thereof ##STR00001##
wherein R.sub.1/R.sub.4 and X and X.sub.3 are as defined in the claims. The invention further relates to their use as inhibitors of copper-containing amine oxidases. The present invention also relates to the preparation of the aforementioned compounds and to pharmaceutical compositions comprising as an active ingredient(s) one or more of the aforementioned compounds, pharmaceutically acceptable salts, hydrates, or solvates thereof.

A process for preparing a compound of formula (II):

##STR00001##

includes reacting a compound of formula (VIII):

##STR00002##

with a compound of formula (XIV):

##STR00003##

A process for preparing a compound of formula (II):

##STR00001##

includes reacting a compound of formula (VIII):

##STR00002##

with a compound of formula (XIV):

##STR00003##

This invention relates to a process for preparing the compound of formula (XIII).

This invention relates to compounds which are used in the preparation of the compound of formula (I).

A process for preparing a compound of formula (II):

##STR00001##

includes reacting a compound of formula (VIII):

##STR00002##

with a compound of formula (XIV):

##STR00003##

This invention relates to compounds which are used in the preparation of the compound of formula (I).