Rao, M. Suresh Chander; Rao, G. S. Krishna, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1988, vol. 27, # 1-12, p. 213 - 216
C–H arylation of unactivated arenes with aryl halides catalyzed by cobalt porphyrin
作者:Ching Tat To、Tek Long Chan、Bao Zhu Li、Ying Ying Hui、TSZ Yiu Kwok、Suet Yu Lam、Kin Shing Chan
DOI:10.1016/j.tetlet.2010.12.092
日期:2011.3
A general procedure for cobalt-catalyzed direct C–H arylation of unactivated arenes has been discovered. This method employs arylhalides as the direct coupling partners with arenes without using any Grignard-type reagents. This catalysis opens a new methodology for the preparation of symmetrical as well as unsymmetrical biaryls in a user-friendly approach.
Di-<i>tert</i>-butyl Peroxide Promoted Direct CH Arylation of Unactivated Arenes with Aryl Halides
作者:Yi-Wei Zhu、Wen-Bin Yi、Jin-Long Qian、Chun Cai
DOI:10.1002/cctc.201301058
日期:2014.3
Di‐tert‐butyl peroxide can smoothly promote the coupling of aryl halides with benzene derivatives without the aid of transition‐metal catalysts through a chain homolytic aromatic substitution mechanism in the presence of potassium tert‐butoxide.
A fluorous ethylenediamine promoted direct C H arylation of unactivated arenes with aryl halides
作者:Yi-Wei Zhu、Yi-Xin Shi
DOI:10.1016/j.jfluchem.2016.05.011
日期:2016.8
A novel and recyclable fluorous ethylenediamine was prepared. Together with potassium tert-butoxide, the fluorous ethylenediamine showed a good activity in promoting the coupling of aryl halides with benzene derivatives without the aid of transition-metal catalysts. Furthermore, a chain homolytic aromatic substitution mechanism was proposed in this paper.
The friedel-crafts condensation of the lactone of 4-methyl-2-hydroxycyclohexane acetic acid with aromatic hydrocarbons-I
作者:D.N. Chatterjee、S.P. Bhattacharjee
DOI:10.1016/s0040-4020(01)98145-1
日期:1971.1
The cationic nuclear alkylation of benzene with the lactone (I) has been found to give a stereoisomeric mixture containing 4-methyl-2-phenylcyclohexyl acetic acid (II) and 4-methyl-3-phenylcyclohexyl acetic acid (III). The former has been cyclized, reduced and dehydrogenated to 3-methyl phenanthrene. A similar condensation between the lactone (I) and toluene afforded a mixture of 4-methyl-2-o-tolyl-
已发现苯与内酯(I)的阳离子核烷基化得到含有4-甲基-2-苯基环己基乙酸(II)和4-甲基-3-苯基环己基乙酸(III)的立体异构混合物。前者已被环化,还原并脱氢为3-甲基菲。内酯(I)和甲苯之间的相似的缩合得到的4-甲基-2-混合物ø甲苯基- ,4-甲基-2- p甲苯基-和4-甲基-3- p -甲苯基-环己基乙酸。前两种酸的结构通过环化成酮氢菲(VIII)和(IX)以及随后分别转化成3,5-二甲基-菲和2,6-二甲基菲而得到确认。讨论了异常的Friedel-Crafts反应的可能机制。
Direct intermolecular C–H arylation of unactivated arenes with aryl bromides catalysed by 2-pyridyl carbinol
作者:Yinuo Wu、Pui Ying Choy、Fuk Yee Kwong
DOI:10.1039/c4ob01211a
日期:——
Direct intermolecular C–H arylation employing aryl bromide as the arene source has been developed. This process proceeds via a simple transition-metal-free pathway. With the aid of inexpensive and commercially available 2-pyridyl carbinol and potassium tert-butoxide, various unactivated arene C–H bonds can be directly arylated by aryl bromides through homolytic aromatic substitution.