Regioselective and regiospecific C(naphthyl)–H bond activation: Isolation, characterization, crystal structure and TDDFT study of isomeric cyclopalladates
The C2(naphthyl)–H, C3(naphthyl)–H and C8(naphthyl)–H bonds of the naphthyl group present in a group of naphthylazo-2′-hydroxyarenes (H2L) have been activated at room temperature by palladium(II) and stable cyclopalladates of the type [PdL(B)] have been isolated in presence of neutral Lewis bases (B). The activation of C2(naphthyl)–H and C8(naphthyl)–H bonds of 1-(2′-hydroxynaphthylazo) naphthalene
萘偶氮-2'-羟基芳烃(H 2 L)中存在的萘基中的萘基的C2(萘基)-H,C3(萘基)-H和C8(萘基)-H键已在室温下被钯活化(II)和类型为[PdL(B)]的稳定的环palpalate已在中性路易斯碱(B)的存在下分离出来。1-(2'-羟基萘偶氮)萘(H 2 L 1)的C2(萘基)–H和C8(萘基)–H键的活化分别导致环戊二酸异构体2a和2b的形成。两种异构体的单晶X射线结构表明萘基萘甲酸萘酯与钯(II)配位,其阴离子为C,N,O供体,路易斯碱B在配位体中位于第四位。这邻戊二酸酯(2a)既包含五元碳环丙环和氮杂萘环螯合环,而五溴二苯环和五氮杂环丙氨酸环和六元氮杂ap环螯合环则存在于邻戊二酸二环中(2b)。另一方面,只有2-(2'-羟基芳基偶氮)萘的C3(萘基)-H键(H 2 L 2和H 2 L 3已发现)被钯(II)区域特异性激活。讨论了辅助供体在区域选择性和区域特异性C(萘基)–H
Cumming; Ferrier, Journal of the Chemical Society, 1925, vol. 127, p. 2375
作者:Cumming、Ferrier
DOI:——
日期:——
Charrier; Ferreri, Gazzetta Chimica Italiana, 1912, vol. 42 II, p. 136
作者:Charrier、Ferreri
DOI:——
日期:——
New Dry Arenediazonium Salts, Stabilized to an Exceptionally High Degree by the Anion of o-Benzenedisulfonimide