Tetramethyldiamidophosphoric acid chloride mediated epoxide-diene conversion and steroidal aromatization


Demir A.

TETRAHEDRON, cilt.57, ss.227-233, 2001 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 57 Konu: 1
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1016/s0040-4020(00)01002-4
  • Dergi Adı: TETRAHEDRON
  • Sayfa Sayıları: ss.227-233

Özet

The reaction of tetramethyldiamidophosphoric acid chloride with epoxides in the presence of a trace amount of water furnished 1,3-dienes in good yield. The conversion works with open chain and cyclic epoxides. A C-C bond cleavage reaction occurs if the epoxide contains a quaternary carbon. Application of this method to epoxy sterols afforded ring A aromatic steroids in good yield. The aromatization works via dienol-benzene rearrangements and is independent of the C-3 stereochemistry. (C) 2000 Elsevier Science Ltd. All rights reserved.