Suzuki cross-coupling catalyzed by palladium (II) complexes bearing 1-aryl-3,4,5,6-tetrahydropyrimidine ligands

Crystal structure of 3-mesityl-1-[(pyridin-2-yl)methyl]-3,4,5,6-tetrahydropyrimidin-1-ium bromide monohydrate

“…For background on the synthesis and properties of Nheterocyclic carbenes, see: Hopkinson et al (2014); Mata et al (2007); Dunsford & Cavell (2014); Mao et al (2012 Table 1 Hydrogen-bond geometry (Å , ).…”

“…To the best of our knowledge, no report on chelating NHC metal complexes has been presented. Following our interest in the development of ring-expanded NHCs based on substituted 1,4,5,6-tetrahydropyrimidine and their metal complexes (Mao et al, 2012), and with the intention of synthesizing chelating ringexpanded NHC metal complexes, we synthesized the chelating NHC precursor, 3-methyl-1-(pyridin-2-ylmethyl)-3,4,5,6tetrahydropyrimidin-1-ium bromide and determined the structure of its monohydrate derivative. Research on the synthesis of carbene-metal complexes containing this ligand is currently in progress.…”

α-Hydroxyimine palladium complexes: Synthesis, molecular structure, and their activities towards the Suzuki–Miyaura cross-coupling reaction

“…Suzukie Miyaura reaction protocols have been shown to form palladium nanoparticles possessing high catalytic activity [65,66]. Examination of the cross-coupling between 4-methylphenyl bromide and 2-methylphenylboronic acid was carried out in EtOH/H 2 O cosolvent.…”

1,1′-Methylenebis[3-(2,6-diisopropylphenyl)-3,4,5,6-tetrahydropyrimidin-1-ium] dibromide ethanol monosolvate monohydrate

“…For the synthesis of the precursor bis(3-(2,6-diisopropylphenyl)-hexahydropyrimidinyl)methane, see: Bisceglia et al (2004). For metal complexes of substituted 1,4,5,6-tetrahydropyrimidines, see: Mao et al (2012). Symmetry codes: (i) Àx; y þ 1 2 ; Àz þ 3 2 ; (ii) Àx; Ày þ 1; Àz þ 1.…”