Transition metal-catalyzed carbocyclization of nitrogen and oxygen-tethered 1,n-enynes and diynes: synthesis of five or six-membered heterocyclic compounds
作者:Di-Han Zhang、Zhen Zhang、Min Shi
DOI:10.1039/c2cc34739c
日期:——
gylic esters to 5,6-dihydropyridazin-4-one derivatives. Furthermore, we will introduce three interesting examples of the synthesis of bicyclic compounds via titanium or rhodium catalyzed carbocyclization of enynes. In this context, we have presented that 1,n-enynes and diynes containing propargylic esters are highly reactive and usefulstartingmaterials for the cycloisomerization catalyzed by a transition