| 摘要 |
<p>A process of condensing a dialkyl ester of a long-chain dicarboxylic acid having 18 to 21 carbon atoms intramolecularly in the presence of either titanium tetrachloride or zirconium tetrachloride and a trialkylamine to form an α-alkoxycarbonylated macrocyclic ketone; and a process of hydrolyzing an α-alkoxycarbonylated macrocyclic ketone obtained by the above process and then subjecting the resulting hydrolyzate to decarboxylation to form a macrocyclic ketone. These processes permit efficient preparation of macrocyclic ketones through high-concentration synthesis.</p> |
