Treatment of pyrimidine bases with X(CH2)nX (X = Br or I; n = 5–12) in, N,N-dimethylformamide containing sodium hydride afforded three types of pyrimidinophanes.
Preparation of Pyrimidinophanes from Pyrimidine Bases
作者:Toshio Itahara
DOI:10.1246/bcsj.69.3239
日期:1996.11
Treatment of pyrimidine bases such as uracil, thymine, and 5-fluorouracil with X(CH2)nX (X = I or Br; n = 4—12) gave three types of pyrimidinophanes. When the numbers of carbon atoms of X(CH2)nX are odd numbers (n = 5, 7, 9, 11), three structures of pyrimidinophanes could be differentiated on the basis of the 13C NMR and mass spectra. Treatment of pyrimidinophanes with 1,4-naphthoquinone or maleimides in the presence of palladium(II) acetate gave the coupling products. Reaction of pyrimidinophanes with NaNO2 in the presence of palladium(II) acetate led to the nitration.