Improved synthesis of bis[p-(phenylethynyl)phenyl]hetarylenes
作者:M. L. Keshtov、A. L. Rusanov、N. M. Belomoina、A. K. Mikitaev
DOI:10.1007/bf02495139
日期:1997.10
Bis[p-(phenylethynyl)phenyl]hetarylenes were synthesized in high yields by an improved method using cross-coupling between phenylacetylene and 4,4′-dibromobenzil followed by condensation of the 4,4′-di(phenylethynyl)benzil obtained with eithero-phenylenediamine and 3,4-diaminobenzoic acid or with benzaldehyde andp-nitrobenzaldehyde in the presence of ammonium acetate.