Synthesis, Cytotoxicity and Antibacterial Studies of Novel Symmetrically and Nonsymmetrically 4-(Methoxycarbonyl)benzyl-Substituted N-Heterocyclic Carbene-Silver Acetate Complexes
作者:Siddappa Patil、Karolin Dietrich、Anthony Deally、Brendan Gleeson、Helge Müller-Bunz、Francesca Paradisi、Matthias Tacke
DOI:10.1002/hlca.201000310
日期:2010.12
ate (2), symmetrically and nonsymmetrically 4‐(methoxycarbonyl)benzyl‐substituted N‐heterocyclic carbene (NHC) precursors, 3a–3f, were synthesized. These NHC precursors were then reacted with silver(I) acetate (AgOAc) to yield the NHC–silver acetate complexes (acetato‐κO)1,3‐bis[4‐(methoxycarbonyl)benzyl]imidazol‐2‐ylidene}silver (4a), (acetato‐κO)4,5‐dichloro‐1,3‐bis[4‐(methoxycarbonyl)benzyl]‐2
从1 H-咪唑(1a),4,5-二氯-1H-咪唑(1b),1 H-苯并咪唑(1c),1-甲基-1 H-咪唑(1d)和1-甲基的反应中合成了对称的和不对称的4-(甲氧基羰基)苄基取代的N-杂环卡宾(NHC)前驱体3a - 3f的-1 H-苯并咪唑(1f)与4-(溴甲基)苯甲酸甲酯(2)。然后将这些NHC前体与乙酸银(I)(AgOAc)反应,生成NHC-乙酸银络合物(acetato- κO)1,3-双[4-(甲氧羰基)苄基]咪唑-2-亚基}银(4a),(acetato - κO)4,5-二氯-1,3-双[4-(甲氧羰基)苄基] -2,3-二氢-1 H-咪唑-2-基}银(4b),(乙酰基κO)1,3-二[4-(甲氧羰基)苄基] -2,3-二氢-1 H苯并咪唑-2-基}银(4c),(乙酰基κO)1- [4-(甲氧基羰基)苄基] -3-甲基-2,3-二氢-1 H-咪唑-2-基}银(图4d),(乙酸-κ