<scp>Electrooxidation‐Induced</scp>
C(sp
<sup>3</sup>
)–H/C(sp
<sup>2</sup>
)–H
<scp>Radical‐Radical Cross‐Coupling</scp>
between Xanthanes and
<scp>Electron‐Rich</scp>
Arenes
作者:Yuwei Liang、Linbin Niu、Xing‐An Liang、Shengchun Wang、Pengjie Wang、Aiwen Lei
DOI:10.1002/cjoc.202200020
日期:2022.6.15
bonds has been a priority research topic in organic synthesis. Minsici reactions have been the powerful methods for C(sp3) − C(sp2) bonds formation. Despite its mature development, the scopes of arenes are usually suitable for electron-deficient heterocyclic compounds, rather than electron-rich arenes. Herein, we report an electrooxidation-induced alkylation of electron-rich arenes with H2 evolution
C(sp 3 ) - H 键的芳基化一直是有机合成的重点研究课题。Minsici 反应是 C(sp 3 ) - C(sp 2 ) 键形成的有力方法。尽管发展成熟,但芳烃的范围通常适用于缺电子杂环化合物,而不是富电子芳烃。在此,我们报道了在无外源氧化剂的条件下,富电子芳烃的电氧化诱导烷基化并释放出 H 2,避免了金属催化剂的使用。该协议适用于各种富电子苯胺衍生物和含氮杂环化合物。我们预计这种电氧化 C(sp 3) - H 芳基化代表了经典芳烃烷基化的重要扩展,从而为自由基交叉偶联化学的发展提供了一种有吸引力的策略。
Features of reactions of 10-methyl-9,10-dihydroacridine heteroanalogs with imines
作者:L. P. Yunnikova、T. V. Makhova、A. L. Yunnikov、V. Yu. Gorokhov
DOI:10.1134/s1070428009050157
日期:2009.5
Relying on the values of the energy of the highest occupied molecular orbitals calculated ab initio a series of reactivity was established for ylides isomeric to 10-methyl-9,10-dihydroacridine, dibenzopyran, dibenzothiopyran, 1,3-benzodithiol, and the tentative threshold value was determined for imines reaction with the mentioned heterocycles. One- or two-stage imines interaction with 10-methyl-9,10-dihydroacridine or dibenzopyran was confirmed by two reactions of ionic hydroheterylation of N-benzylideneaniline in the presence of sodium tetrahydroborate by the cation of 10-methyl-9,10-dihydroacridinium or the cation of dibenzopyrylium.
Yunnikova, L. P., Russian Journal of Organic Chemistry, 1995, vol. 31, # 1.1, p. 67 - 70
作者:Yunnikova, L. P.
DOI:——
日期:——
Synthesis of xanthene and thioxanthene derivatives and study of their antimicrobial activity
作者:L. P. Yunnikova、É. V. Voronina
DOI:10.1007/bf02223747
日期:1996.11
Ab initio calculations of effect of (thio)xanthenyl and dibenzosuberenyl substituents on dehydrogenation of N-Benzylanilines
作者:L. P. Yunnikova、V. P. Feshin、T. A. Akent’eva
DOI:10.1134/s1070363213040166
日期:2013.4
reaction center (carbon atom in the CH2-group) for the latter were obtained in the quantum-chemical calculations by RHF/6-31G(d) method. This explains the possibility and the ease of dehydrogenation of N-benzyl-4-[9-(thio)xanthenyl]aniline with imines in trifluoroacetic acid due to effect of the substituents. The calculated data suggest the same possibility for N-benzyl-4-(5-dibenzosuberenyl)aniline: it