1) 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。
4) aryloxo-functional N-heterocyclic carbene
芳氧功能化氮杂环卡宾
5) Enolate-functionalized N-heterocyclic carbene
烯醇功能化氮杂环卡宾
6) N-heterocyclic carbene
N-杂环卡宾
1.
Properties and syntheses of N-heterocyclic carbenes and their metal complexes;
N-杂环卡宾及其金属络合物的性质和合成方法
2.
Investigation of Staudinger reaction catalyzed by N-heterocyclic carbenes;
对N-杂环卡宾催化的Staudinger反应的研究
3.
It was found that the palladium catalyst supported by phosphine-functionalized N-heterocyclic carbene derived from ferrocene exhibits better catalytic performance than those of supported by sulfoether-functionalized and un-functionalized N-heterocyclic carbenes in the cross-coupling of 4-bromotoluene with.
合成了硫醚官能化、膦官能化及未官能化的二茂铁咪唑盐,并研究了以其作为N-杂环卡宾配体前体对Pd催化的Suzuki-Miyaura偶联反应的影响,发现在4-甲基溴苯与苯硼酸偶联反应中以膦官能化的配体对催化性能提高有利,而硫醚官能化不利于催化性能提高。
补充资料：门无杂宾
1.家中没有杂七杂八的客人。形容不乱交朋友。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条