在Me 3 SiCl存在下,双硼酸酯Li 2 [ o -C 6 H 4(BH 3)2 ]与2当量适当的吡唑衍生物(Hpz R)之间的反应产生邻苯撑桥连的吡唑HB(μ- pz R)2(μ- o -C 6 H 4)BH(3a-3e ; Hpz R = 4-碘吡唑(3a),4-(三甲基甲硅烷基)吡唑(3b),3,5-二甲基吡唑(3c),3 ,5-二(叔)-丁基)吡唑(3d),3,5-双(三氟甲基)吡唑(3e))。因此,该合成方法可提供带有(i)可官能化基团,(ii)给电子或吸电子取代基和(iii)空间需求变化的吡唑环的不带电荷的B-N三联烯。用三(吡唑-1-基)硼酸钾K [HBpz 3 ]或K [ p- R * C 6 H 4 Bpz 3 ]处理对-R * C 6 H 4 BBr 2产生阳离子吡唑基桥连的吡唑并[ p -BrC 6 H 4 B(μ-pz)3 BH] Br([4a ] Br)和[ p
Copper Complexes of Mono- and Ditopic [(Methylthio)methyl]borates: Missing Links and Linked Systems En Route to Copper Enzyme Models
作者:Kai Ruth、Sandor Tüllmann、Hannes Vitze、Michael Bolte、Hans-Wolfram Lerner、Max C. Holthausen、Matthias Wagner
DOI:10.1002/chem.200800588
日期:2008.7.28
successfully been used for preparing the (N(2)S) scorpionate [PhBpz(2)(CH(2)SMe)](-) ([5](-)) (pz: pyrazol-1-yl) and the (NS(2)) scorpionate [PhBpz(CH(2)SMe)(2)](-), respectively. Compound 7 proved to be an excellent building block for the heteroditopic poly(pyrazol-1-yl)borate p-[pz(3)B--C(6)H(4)--Bpz(2)(CH(2)SMe)](2-) ([10](2-)) that mimics the two ligation sites of the copper enzymes peptidylglycine alpha-hydroxylating
“Third-Generation”-Type Functional Tris(2-pyridyl)borate Ligands and Their Transition-Metal Complexes
作者:So Yi Jeong、Roger A. Lalancette、Huina Lin、Patrycja Lupinska、Patrick O. Shipman、Alexandra John、John B. Sheridan、Frieder Jäkle
DOI:10.1021/acs.inorgchem.6b00124
日期:2016.4.4
characteristics of the corresponding low-spin iron(II) and ruthenium(II) complexes are compared. We demonstrate the further elaboration of iodo derivatives with alkynes via Sonogashira–Hagihara coupling, a process that proceeds with high yield for the iron(II) and ruthenium(II) complexes but not for the free ligand. Borylation of the silyl-substituted ruthenium(II) complex with BBr3 was also investigated. In addition
5-di(tert-butyl)pyrazole (3d), 3,5-bis(trifluoromethyl)pyrazole (3e)). The synthesis approach thus provides access to uncharged B–N triptycenes bearing (i) functionalisable groups, (ii) electron-donating or -withdrawing substituents and (iii) pyrazole rings of varying steric demand. Treatment of p-R*C6H4BBr2 with the potassiumtris(pyrazol-1-yl)borates K[HBpz3] or K[p-R*C6H4Bpz3] yields cationic pyrazolyl-bridged
在Me 3 SiCl存在下,双硼酸酯Li 2 [ o -C 6 H 4(BH 3)2 ]与2当量适当的吡唑衍生物(Hpz R)之间的反应产生邻苯撑桥连的吡唑HB(μ- pz R)2(μ- o -C 6 H 4)BH(3a-3e ; Hpz R = 4-碘吡唑(3a),4-(三甲基甲硅烷基)吡唑(3b),3,5-二甲基吡唑(3c),3 ,5-二(叔)-丁基)吡唑(3d),3,5-双(三氟甲基)吡唑(3e))。因此,该合成方法可提供带有(i)可官能化基团,(ii)给电子或吸电子取代基和(iii)空间需求变化的吡唑环的不带电荷的B-N三联烯。用三(吡唑-1-基)硼酸钾K [HBpz 3 ]或K [ p- R * C 6 H 4 Bpz 3 ]处理对-R * C 6 H 4 BBr 2产生阳离子吡唑基桥连的吡唑并[ p -BrC 6 H 4 B(μ-pz)3 BH] Br([4a ] Br)和[ p