%0 Journal Article %T Utility of Cyclododecanone as Synthon to Synthesize Fused Heterocycles %J American Journal of Organic Chemistry %@ 2163-1301 %D 2012 %I %R 10.5923/j.ajoc.20120203.05 %X Ethyl 2-oxocyclododecanecarboxylate (1), and 2-(hydroxyl-methylene)cyclododecanone (7) were used as key intermediates for synthesis of macrocyclic systems incorporating either fused or exocyclic nitrogen heterocycles of different ring sizes. Ring enlargement was also implemented. %K Cyclododecanone %K ¦Â-ketoesters %K pyrazolones %K enaminoketones %K fused heterocycles. %U http://article.sapub.org/10.5923.j.ajoc.20120203.05.html