Synthesis and characterization of piperazine-substituted dihydrofuran derivatives viaMn(OAc)3 mediated radical cyclizations


SARI S. , YILMAZ M.

TURKISH JOURNAL OF CHEMISTRY, cilt.44, ss.1303-1332, 2020 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 44 Konu: 5
  • Basım Tarihi: 2020
  • Doi Numarası: 10.3906/kim-2003-23
  • Dergi Adı: TURKISH JOURNAL OF CHEMISTRY
  • Sayfa Sayıları: ss.1303-1332

Özet

The aim of this study is to synthesize novel piperazine-containing dihydrofuran compounds (3a-n)from radical additions and cyclizations of diacyl and alkyl-acyl piperazine derivatives (1a-h) with 1,3-dicarbonyl compounds (2a-c) mediated by Mn(OAc)(3) for the first time. From the reactions of 1a-c with dimedone (2a);1a, 1c, and 1d with acetylacetone (2b); and la with ethylacetoacetate(2c) ,the dihydrofuran-piperazine compounds 3a-c > 3d-f, and 3g were obtained in medium to high yields (31%-81%), respectively. In addition, dihydrofuran-piperazine compounds 3h-j and 3k-n were prepared at low to medium yields (20%-40%) from the reactions of le-g with 2a and 1e-h with 2c, respectively.