873424-47-6Relevant articles and documents
Cobalt-catalyzed versus uncatalyzed intramolecular Diels-Alder cycloadditions
Biletskyi, Bohdan,Tenaglia, Alphonse,Clavier, Hervé
supporting information, p. 103 - 107 (2017/12/28)
The intramolecular [4+2] cycloadditions of dienynes was investigated using cobalt-based catalysts. Substrates without substitution on alkyne moiety were found to react under thermal activation. The use of a cobalt salt as catalyst made reactions cleaner by limiting the formation of byproducts. Cycloadditions with dienynes possessing a substituent on the alkyne pattern occurred only in presence of a cobalt catalyst which displayed a moderate to good activity depending on the substrate patterns.
Expedient synthesis of fused azepine derivatives using a sequential rhodium(II)-catalyzed cyclopropanation/1-aza-Cope rearrangement of dienyltriazoles
Schultz, Erica E.,Lindsay, Vincent N. G.,Sarpong, Richmond
supporting information, p. 9904 - 9908,5 (2014/11/08)
A general method for the formation of fused dihydroazepine derivatives from 1-sulfonyl-1,2,3-triazoles bearing a tethered diene is reported. The process involves an intramolecular cyclopropanation of an α-imino rhodium(II) carbenoid, leading to a transien
Cobalt carbonyl-catalyzed tandem [2+2+1]/[4+2] cycloaddition of dienediyne to new tetracycles
Kim, Do Han,Chung, Young Keun
, p. 1889 - 1892 (2007/10/03)
A tandem reaction of dienediynes catalyzed by dicobalt octacarbonyl gives teracyclic compounds in a poor to high yield depending upon the substrate. The structural frame of the synthesized polycyclic compounds is disclosed for the first time in this study
