Organic Letters 2005-05-12

Highly enantioselective conjugate addition of nitromethane to chalcones using bifunctional cinchona organocatalysts.

Benedek Vakulya, Szilárd Varga, Antal Csámpai, Tibor Soós

文献索引：Org. Lett. 7 , 1967-1969, (2005)

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摘要

Cinchona alkaloid-derived chiral bifunctional thiourea organocatalysts were synthesized and applied in the Michael addition between nitromethane and chalcones with high ee and chemical yields.

相关化合物

  • N-[3,5-二(三氟甲基...
  • 硝基甲烷

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Urea- and thiourea-substituted cinchona alkaloid derivatives as highly efficient bifunctional organocatalysts for the asymmetric addition of malonate to nitroalkenes: inversion of configuration at C9 dramatically improves catalyst performance.

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