2) aryloxo-functional N-heterocyclic carbene
芳氧功能化氮杂环卡宾
3) Enolate-functionalized N-heterocyclic carbene
烯醇功能化氮杂环卡宾
4) N-heterocyclic carbene
氮杂环卡宾
1.
The reaction of 1 with n-BuLi in molar ratio 2∶1 at the room temperature gives the first N-heterocyclic carbenes(NHC) benzyl migration product functionalized by phenoxo [O-4,6-di-tBu-C6H2-2-CH2{C(MeNCHCHNH)}]2Li2(THF)2(2),The complexes 1 and 2 have been characterized by the 1HNMR and X-ray diffraction.
通过亲核反应合成了芳氧功能化的氮杂环卡宾前体[HO-4,6-di-C(CH3)3-C6H2-2-CH2{CH(NCH-CHN)CH3}]Cl(1),1再与正丁基锂(n-BuLi)按照摩尔比2∶1常温反应生成芳氧功能化的氮杂环卡宾迁移产物[O-4,6-dit-Bu-C6H2-2-CH2{C(MeNCHCHNH)}]2Li2(THF)2(2)。
2.
The cyclopentadienylnickel(II) and indenylnickel(II) complexes bearing N-heterocyclic carbenes [(Cp)Ni(NHC)X (X = Cl, Br) (1, 2, 3) and (l-R-Ind)Ni(NHC)X (R=H, X=C1, Br; R=Me, X=C1)](4, 5, 6, 7, 8) have been synthesized by the reactions of (Cp)_2Ni or (R-Ind)2Ni (R = H, Me) with the imidazolium salts, respectively.
一、通过(Cp)_2Ni,(R-Ind)_2Ni(R=H,Me)和不同咪唑盐的配体消除反应,合成了一系列含氮杂环卡宾的茂基镍(Cp)Ni(NHC)X(1,2,3)和茚基镍配合物(Ind)Ni(NHC)X(4,5,6,7,8)(NHC=N-heterocyclic carbene),并用元素分析、核磁、红外、熔点测定等进行了表征,其中1,4,5和6经过了X-单晶衍射的表征。
3.
N-heterocyclic carbenes (NHCs) as strongσ-donating ligands can form stable complexes with various transition metals.
氮杂环卡宾具有很强的供电子作用,能和各种价态的金属尤其是过渡金属形成稳定的络合物,同时氮杂环卡宾配体比较廉价、无毒,在催化过程中能够稳定催化反应中的活性中间体零价金属并且所形成的配合物在空气中稳定,所以它是有机膦配体的一种理想替代品。
补充资料:离子交换树脂A101D 强碱性季铵I型阴离子交换树脂(A201型) 611强碱性季铵I型阴离子交换树脂
CAS:39421-71-1
中文名称:离子交换树脂A101D 强碱性季铵I型阴离子交换树脂(A201型) 611强碱性季铵I型阴离子交换树脂
英文名称:Duolite A101D Anion exchange resin, strong basic quarternary ammonium(I) A201; Anion exchange resin,strong basic quarternary ammonium(I)A201
中文名称:离子交换树脂A101D 强碱性季铵I型阴离子交换树脂(A201型) 611强碱性季铵I型阴离子交换树脂
英文名称:Duolite A101D Anion exchange resin, strong basic quarternary ammonium(I) A201; Anion exchange resin,strong basic quarternary ammonium(I)A201
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