Rhodium-Catalyzed Intramolecular Transannulation Reaction of Alkynyl Thiadiazole Enabled 5,<i>n</i>-Fused Thiophenes
作者:Ji Eun Kim、Jinsub Lee、Hyunsik Yun、Yonghyeon Baek、Phil Ho Lee
DOI:10.1021/acs.joc.6b02614
日期:2017.2.3
of a wide range of fused thiophenes, including those fused with lactams, lactones, or cyclicethers, was developed from a rhodium-catalyzed intramolecular transannulation reaction of alkynyl thiadiazoles. This transannulation reaction provides an efficient platform for the construction of a variety of 5,n-fused thiophenes from readily available starting materials together with the release of molecular
Synthesis of Bicyclic Isothiazoles through an Intramolecular Rhodium-Catalyzed Transannulation of Cyanothiadiazoles
作者:Boram Seo、Hyunseok Kim、Ya Gob Kim、Yonghyeon Baek、Kyusik Um、Phil Ho Lee
DOI:10.1021/acs.joc.7b02077
日期:2017.10.6
available cyanothiadiazoles containing an ester, amide, or ether as a linker is described. It provides a wide range of bicyclic isothiazoles in good to excellent yields together with the release of molecular nitrogen. These results indicate that the carbon atom in the α-thiavinyl carbene is nucleophilic and that the sulfur atom is electrophilic.