<i>N</i>-Aryl Pyrrolo-tetrathiafulvalene Based Ligands: Synthesis and Metal Coordination
作者:Jean-Yves Balandier、Marcos Chas、Paul I. Dron、Sébastien Goeb、David Canevet、Ahmed Belyasmine、Magali Allain、Marc Sallé
DOI:10.1021/jo902529e
日期:2010.3.5
A straight forward general synthetic access to N-aryl-1,3-dithiolo[4,5-c]pyrrole-2-thione derivatives 6 from acetylenedicarbaldehyde monoacetal is depicted. In addition to their potentiality as precursors to dithioalkyl-pyrrole derivatives, thiones 6 are key building blocks to N-aryl monopyrrolotetrathiafulvalene (MPTTF) derivatives 10. X-ray structures of four of these thiones intermediates, reminiscent of the corresponding MPTTF derivatives, are provided. When the aryl group is it binding pyridyl unit, the MPTTF derivative 10a can coordinate M(II) salts (M = Pt, Pd). The first examples of metal-directed orthogonal MPTTF-based dimers 11-14, obtained through coordination of 10a to cis-blocked square planar Pt or Pd complexes are described. Studies on the parameters influencing the dimer construction are presented, as well its first recognition properties of the resulting electron-rich clip for C-60.