Enantioselective construction of vicinal all-carbon quaternary centers via catalytic double asymmetric decarboxylative allylation.

نویسندگان

  • Santanu Ghosh
  • Subhajit Bhunia
  • Badrinath N Kakde
  • Subhadip De
  • Alakesh Bisai
چکیده

We report a catalytic stereoconvergent construction of vicinal all-carbon quaternary centers via double stereoablative enantioselective alkylation of a mixture having racemic and meso diastereomers of esters to afford exceptional levels of diastereo- (up to 17 : 1) and enantioselectivity (up to >99% ee). The strategy offers an efficient and general approach to dimeric cyclotryptamine alkaloids sharing a labile C(3a)-C(3a') σ-bond in the hexahydropyrroloindoline core.

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عنوان ژورنال:
  • Chemical communications

دوره 50 19  شماره 

صفحات  -

تاریخ انتشار 2014