Ruthenium-Catalyzed Cross-Coupling of 7-Azabenzonorbornadienes with Alkynes. An Entry to 3a,9b-Dihydrobenzo[<i>g</i>]indoles
作者:Alphonse Tenaglia、Sylvain Marc
DOI:10.1021/jo702248r
日期:2008.2.1
reaction of 7-azabenzonorbornadienes with alkynes to form 3a,9b-dihydrobenzo[g]indoles. This transformation involves the cleavage of one C−N bond of the bicyclic alkene and formation of two (C−C and C−N) bonds at the acetylenic carbons. The scope and limitations of the reaction are addressed according to the substitution patterns of the alkyne and of the substituent at the nitrogen atom of the azabenzonorbornadiene
原位生成的富电子半三明治钌络合物CpRuI(PPh 3)2催化7-氮杂苯并降冰片二烯与炔烃的偶联反应,形成3a,9b-二氢苯并[ g ]吲哚。这种转变涉及双环烯的一个C-N键的裂解和在炔碳上形成两个(CC和C-N)键。根据炔烃和氮杂苯并降冰片二烯的氮原子上的取代基的取代方式来解决反应的范围和限制。