adduct [HB(3,5-(CF3)2Pz)3]Zn(NCMe)2}ClO4 catalyzes the functionalization of tertiary, secondary, and primary C–H bonds of alkanes via carbene insertion. Ethyl diazoacetate serves as the :CHCO2Et carbene precursor. The counteranion, supporting ligand, and coordinating solvents affect the catalytic activity. An in situ generated [HB(3,5-(CF3)2Pz)3]Zn}+ species containing a bulkier B[3,5-(CF3)2C6H3]4}−
阳离子
锌加合物[HB(3,5-(CF 3)2 Pz)3 ] Zn(NCMe)2 } ClO 4通过卡宾插入催化
烷烃的叔,仲和伯C–H键官能化。
重氮乙酸乙酯是:CHCO 2 Et卡宾前体。抗衡阴离子,支持
配体和配位溶剂会影响催化活性。原位生成的[HB(3,5-(CF 3)2 Pz)3 ] Zn} +物种,其中包含较大的B [3,5-(CF 3)2 C 6 H 3 ] 4 } - 在所用的
锌催化剂中,阴离子可提供最佳结果。