作者:Marina Uzelac、Kang Yuan、Gary S. Nichol、Michael J. Ingleson
DOI:10.1039/d1dt02580e
日期:——
to neutral complex 4. Complex 1 reacted with one equivalent of HBPin to give predominantly PhBPin (ca. 90%) and a lithium amidophenylzincate containing a hydride unit, complex 7-A, as the major zinc containing product. Complex 7-A transfers hydride to an electrophile preferentially over phenyl, indicating it reacts as a hydridozincate. Attempts to react 1 with >1 equivalent of HBPin or with catecholborane
含有氢化物的酰胺锌酸盐尚未被充分探索,但可能是有用的配合物。尝试通过Zn–C/H–BPin 交换结合酰胺基有机锌酸盐和频哪醇硼烷 (HBPin) 来获得这种类型的锌酸盐,而不是优先形成酰胺–BPin 和/或 [酰胺–BPin(Y)] - (Y = Ph, 酰胺, H),当酰胺为六甲基二硅肼或 2,2,6,6-四甲基哌啶且烃基为苯基或乙基时。相比之下,使用基于联吡啶酰胺 (dpa) 的芳基锌络合物导致 Zn-C/H-BPin 复分解成为主要结果。两个 L n Li[(dpa)ZnPh 2 ] (L = THF, n = 3; L = PMDETA, n = 1) 配合物的独立合成和完整表征,1和3分别启用了反应性研究,表明这些物种显示出锌酸盐类型的反应性(与中性复合物 (Me-dpa)ZnPh 2 , 4的较低反应性相比,Me-dpa = 2,2'-二吡啶基-N -甲胺)。这包括1执行 4-乙炔基甲苯的快速去质子化和苯基转移到