Cu-Catalyzed Selective Mono-N-pyridylation: Direct Access to 2-AminoDMAP/Sulfonamides as Bifunctional Organocatalysts


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Isik M., TANYELİ C.

JOURNAL OF ORGANIC CHEMISTRY, cilt.78, sa.4, ss.1604-1611, 2013 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 78 Konu: 4
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1021/jo302713b
  • Dergi Adı: JOURNAL OF ORGANIC CHEMISTRY
  • Sayfa Sayıları: ss.1604-1611

Özet

Direct and selective mono-N-pyridylation of trans-(R,R)-cyclohexane-1,2-diamine is described here. Facile preparation of a novel chiral 2-aminoDMAP core catalaphore via Cu catalysis has led to the development of various sulfonamide/2-aminoDMAPs as bifunctional acid/base organocatalysts (most in two steps overall), which have been shown to very effectively promote asymmetric conjugate addition of acetylacetone to trans-beta-nitroolefins with good to excellent yields (87-93%) and enantioselectivites (up to 99%).