Ps. Rao et al., SYNTHESIS OF 2,6-DIBENZOYL-3,5-DISTYRYL BENZO (1,2-B 5,4-B')-DIFURANSAS POTENTIAL ANTIFEEDANTS/, Indian Journal of Heterocyclic Chemistry, 7(4), 1998, pp. 293-294
2,6-Dibenzoyl-3,5-distyrylbenzo-(1,2-b : 5,4-b')-difurans (IIIa-f) hav
e been prepared by condensing substituted dichalcones with omega-bromo
acetophenone under phase transfer catalysis conditions.