Β‐Meso Covalently Linked Novel Dipalladium(II) Bis‐Dipyrrin Complex. Issue 6 (9th May 2016)

• Record Type: Journal Article
• Authors: Isar, Prosenjit; Chatterjee, Tamal; Ravikanth, Mangalampalli
• Is Part Of: ChemistrySelect. Volume 1:Issue 6(2016)
• Page Start: 1220
• Page End: 1224
• Publication Date: 2016-05-09
• Subjects: b-meso linked bis-dipyrrin -- dipalladium complex -- Suzuki-Miyaura reactions; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201600188
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: β ‐ Meso covalently linked bis‐dipyrrin ligand was synthesized by removing BF2 unit from β ‐dipyrrinyl BODIPY under mild Lewis acid catalyzed conditions and the resulted bis‐dipyrrin ligand was used to prepare the first example of dipalladium(II) bis‐ dipyrrin complex by treating it with Pd(acac)2 in CH2 Cl2 at reflux temperature. The formation of dipalladium bis‐dipyrrin complex was confirmed by HR‐MS, 1D, 2D NMR spectroscopy and X‐ray crystallography. The crystal structure revealed that both the Pd(II)‐dipyrrin units are nonplanar and makes an angle of ∼59° with each other. The Pd(II) ions were slightly deviated from the dipyrrin plane and each Pd(II) ion was in square planar geometry co‐ordinating to two nitrogen atoms of dipyrromethene unit and two oxygen atoms of acetylacetonate ligand. The preliminary studies indicated that dipalladium bis‐dipyrrin complex can be used as efficient catalyst for Suzuki‐Miyaura cross coupling reactions. Abstract : β ‐ Meso covalently linked bis‐dipyrrin ligand was synthesized by decomplexation of BF2 unit from β ‐dipyrrinyl BODIPY under mild Lewis acid catalyzed conditions and used the resulted bis‐dipyrrin ligand for the synthesis of dipalladium bis‐dipyrrin complex.