929023-36-9Relevant academic research and scientific papers
Catalytic asymmetric inverse-electron-demand diels-alder reaction of N-sulfonyl-1-aza-1,3-dienes
Esquivias, Jorge,Arrayas, Ramon Gomez,Carretero, Juan C.
, p. 1480 - 1481 (2007)
An efficient chiral Lewis acid-catalyzed inverse-electron-demand Diels-Alder reaction of 1-azadienes is described. This procedure is based on the combination of NiII-DBFOX complex as catalyst and the use of a metal-coordinating (8-quinolyl)sulfonyl moiety at the iminic nitrogen of the N-sulfonyl 1-aza-1,3-diene, providing highly functionalized piperidine derivatives in good yields with excellent endo-selectivity, and enantioselectivities typically in the range of 77-92% ee. Copyright
Inverse-electron-demand diels-alder reactions of N-(heteroarylsulfonyl)-1- aza-1,3-dienes catalyzed by chiral lewis acids
Esquivias, Jorge,Alonso, Ines,Arrayas, Ramon Gomez,Carretero, Juan Carlos
scheme or table, p. 113 - 126 (2009/07/17)
The feasibility of using chiral Lewis acids as catalysts to promote the inverse-electron-demand Diels-Alder reactions of 1-azadienes with vinyl ethers has been demonstrated. Two catalyst systems were identified for this reaction, both relying on the prese
