| 摘要 |
<p>A process known per se for the manufacture of oxygenated N-aryl-diazacyclic compounds of the formula <IMAGE> (I) wherein EACH OF R1 and R2 represents a substituted or unsubstituted aryl group and alk represents a lower alkylene group which separates both nitrogen atoms from each other by 2 or 3 carbon atoms, or salts thereof.</p> |
