Addison, Anthony W.; Rao, Nageswara T.; Wahlgren, Curtis G., Journal of Heterocyclic Chemistry, 1983, vol. 20, p. 1481 - 1484
作者:Addison, Anthony W.、Rao, Nageswara T.、Wahlgren, Curtis G.
DOI:——
日期:——
ADDISON, A. W.;RAO, T. N.;WAHLGREN, C. G., J. HETEROCYCL. CHEM., 1983, 20, N 6, 1481-1484
作者:ADDISON, A. W.、RAO, T. N.、WAHLGREN, C. G.
DOI:——
日期:——
Solvent-Free Synthesis of New Bis(Benzimidazole-2-Alkylthio) Polyethylene Oxides Starting from Dithiols
作者:A. Akremi、A. Noubigh
DOI:10.13005/ojc/330209
日期:2017.4.28
Polyethylene oxide (PEO) could be incorporated in molecular structure by several ways. A series of diacid S-alkylpolyethylene oxides 4a-i have been prepared from dithiols 1a-c through multistep reaction sequence. Novel symmetric bis-benzimidazoles (polyethylene oxide) 6a-i have been synthesized over green route. The condensation of the title compounds 4a-i on o-phenylenediamine 5, via the further deamination reaction and without catalyst, afforded the corresponding bis-benzimidazoles 6a-i in acceptable yields. The new compounds were established on the basis of their elemental analysis, IR, 1H NMR, 13C NMR and mass spectral data.