“…Various palladium based homogeneous catalysts such as palladium diaminocarbene complexes [6], oxime based palladacycle [7], chalcogenated Schiff base [8], some nitrogen based ligands [9], N-H heterocyclic carbene complex [10] and morpholine-Pd(OAc) 2 [11] were employed in the Suzuki cross coupling reactions. However, these reported catalysts could not be recovered and hence, researchers moved towards heterogeneous supports like alumina based catalyst [12], MCM-41 [13], MIL-101 [14], Al-MOF [15], Montmorillonite clay [16], sepiolite clay [17], SBA-15/ CCMet/Pd(II) [18], Pd acetate in imine functionalized silica gel [19], and nanoporus polymeric ionic liquid loaded with palladium [20].…”