A new methodology for the preparation of Co(I)-NHC (NHC = N-heterocyclic carbene) complexes, namely, [Co(PCNHCP)(CO)2][Co(CO)4] (1) and [Co(PCNHCP)(CO)2]BF4 (2), has been developed (PCNHCP 1,3-bis(2-(diphenylphosphanyl)ethyl)-imidazol-2-ylidene). Both complexes can be straightforwardly...

A one-pot synthesis ofdimethyl-{3-methyl-2-[(alkoxycarbonyl) anilino]-2,3-dihydro-1Himidazol-1-yl)}-2-butenedioatesanddimethyl-2-[(alkoxycarbonyl)anilino]-2-butenedioates derivatives via reactions between dimethyl acetylenedicarboxylate,1-methylimidazoleand N-phenylcarbamates is described. The mild reaction condition, simple mixing of the starting materials and good yields exhibit the synthetic...

The mesomeric betaine imidazolium-1-ylphenolate forms a borane adduct with tris(pentafluorophenyl)borane by coordination with the phenolate oxygen, whereas its NHC tautomer 1-(2-phenol)imidazol-2-ylidene reacts with (triphenylphosphine)gold(I) chloride to give the cationic NHC complex [Au(NHC)2][Cl] by coordination with the carbene carbon atom. The anionic N-heterocyclic carbene 1-(2-phenolate)...

In the title mol-ecule, C(15)H(15)N(3)O(2)S, the dihedral angle between the naphthalene ring system and the imidazole ring is 86.1 (2)°. In the crystal structure, weak inter-molecular C-H⋯O and C-H⋯N hydrogen bonds, as well as weak C-H⋯π inter-actions, connect mol-ecules, forming a two-dimensional network.