Synthesis of cyclopentadiene derivatives by retro-Diels–Alder reaction of norbornadiene derivatives
作者:Erdin Dalkılıç、Arif Daştan
DOI:10.1016/j.tet.2015.02.023
日期:2015.4
Synthesis of cyclopentadiene derivatives starting from norbornadiene was investigated using dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylate. The products obtained were either cyclopentadienes or diazines depending on the substituents. The driving force for the formation of these products was discussed in terms of electronic effects.
with strained olefins, unveiling their capability to yield metathesis-related products. Our investigations led to the isolation of a structurally characterized metallacyclobutane during the reaction with norbornadiene derivatives, ultimately leading to a ring-opened iron alkylidene. These findings provide compelling evidence that iron complexes adhere to the Chauvin olefinmetathesis mechanism.
Palladium-Catalyzed Suzuki Couplings of 2,3-Dibromonorbornadiene: Synthesis of Symmetrical and Unsymmetrical Aryl-Substituted Norbornadienes
作者:Woo-Jin Yoo、Gavin C. Tsui、William Tam
DOI:10.1002/ejoc.200400713
日期:2005.3
Palladium-catalyzedSuzukicoupling reactions between 2,3-dibromonorbornadiene and arylboronic acids were investigated. These reactions provide an efficient method for the synthesis of symmetrical 2,3-diarylnorbornadienes which are not accessible using the traditional Diels–Alder cycloaddition reactions. The optimized reaction conditions of the Suzukicoupling reactions were found using [Pd2(dba)3]