Les o-quinodimethanes intermediaires reagissent avec des dienophiles selon une cycloaddition pour donner des composes bicycliques et tricycliques du typenaphtalenecarboxylate-2 demethyle,naphtalenedicarboxylate-2,3 demethyle ounaphto [2,3-c]furannedione-1
The oxidative cyclisation of 5-stannyl-1,3-pentanediol derivatives gave corresponding 4-hydroxytetrahydropyrans in excellent yields, and its applications to the synthesis of dioxabicyclodecane 12 and 4-hydroxy-δ-lactone 14 are also described.
Proline-catalyzed asymmetric Diels–Alder reactions of an o-quinodimethane
作者:Hidenori Shirakawa、Hiroshi Sano
DOI:10.1016/j.tetlet.2014.05.107
日期:2014.7
Catalytic asymmetricDiels–Alderreaction of α-amino-o-quinodimethane with α,β-unsaturated aldehydes was achieved with high diastereo- and enantioselectivities in the presence of l-proline, which acts as a promoter to generate the quinodimethane from the corresponding precursor as well as a chiral catalyst for the enantioselective Diels–Alderreaction.
Les o-quinodimethanes intermediaires reagissent avecdes dienophiles selon une cycloaddition pour donner descomposes bicycliques et tricycliques du type naphtalenecarboxylate-2 de methyle, naphtalenedicarboxylate-2,3 de methyle ou naphto [2,3-c] furannedione-1,3
Les o-quinodimethanes intermediaires reagissent avec des dienophiles selon une cycloaddition pour donner des composes bicycliques et tricycliques du typenaphtalenecarboxylate-2 demethyle,naphtalenedicarboxylate-2,3 demethyle ounaphto [2,3-c]furannedione-1