Cu-Catalyzed oxidative 1 : 2 couplings of arynes with nucleophilic terminalalkynesunderaerobicconditions are described herein. A mechanistic investigation revealed a plausible involvement of an aryl-Cu(III)-generating pathway. By this method, ubiquitous arenediynes can be efficiently assembled in a single step under mild conditions.
A one-step synthesis of dehydro[12]annulenes using palladium-catalyzed reaction of o-diiodoarenes with acetylene gas
作者:Masahiko Iyoda、Anusorn Vorasingha、Yoshiyuki Kuwatani、Masato Yoshida
DOI:10.1016/s0040-4039(98)00882-x
日期:1998.6
Hexadehydrotribenzo[12]annulene and its analogues were synthesized in a one-pot procedure by the palladium-catalyzed cross-coupling of o-diiodobenzene and its analogues with acetylene. The reaction proceeded smoothly to give the desired dehydro[12]annulenes in moderate yields.
It Takes Alkynes to Make a World - New Methods for Dehydrobenzoannulene Synthesis
作者:Michael M. Haley
DOI:10.1055/s-1998-5736
日期:1998.6
Recent advances in the assembly of dehydrobenzoannulenes (DBAs) are the subject of this account. Using in situ generated acetylenic intermediates, novel α,ω-polyynes can be easily constructed using Pd-catalyzed alkynylation methodology. Subsequent cyclization via intra- and intermolecular Cu-mediated reactions can provide a wide variety of DBAs, including heretofore inaccessible topologies, systems
脱氢苯甲环烯 (DBA) 组装的最新进展是本报告的主题。使用原位生成的炔中间体,可以使用 Pd 催化的炔基化方法轻松构建新型 α,ω-聚炔。随后通过分子内和分子间 Cu 介导的反应进行的环化可以提供各种各样的 DBA,包括迄今为止无法获得的拓扑结构、具有前所未有数量的炔键的系统、具有衍生芳环的结构和不寻常的有机金属物种。
Copper-Mediated Simple and Efficient Synthesis of Tribenzohexadehydro[12]annulene and Its Derivatives
A simple and efficient synthesis of tribenzohexadehydro[12]annulene and its derivatives was carried out using coupling reaction of acetylenes with iodoarenes in the presence of catalytic amounts of CuI and PPh,, together with three equivalents of K 2 CO 3 in DMF. This synthetic procedure was applied to the synthesis of a large annulenoannulene derivative.
在催化量的 CuI 和 PPh 以及三当量的 DMF 中的 K 2 CO 3 存在下,使用乙炔与碘代芳烃的偶联反应进行了三苯并六氢[12]环烯及其衍生物的简单有效合成。该合成程序适用于合成大环烯基环烯衍生物。
A Nickel-Doped Dehydrobenzoannulene-Based Two-Dimensional Covalent Organic Framework for the Reductive Cleavage of Inert Aryl C–S Bonds
作者:W. Karl Haug、Eric R. Wolfson、Blake T. Morman、Christine M. Thomas、Psaras L. McGrier
DOI:10.1021/jacs.0c01026
日期:2020.3.25
characterization, and catalytic properties of an azine-linked two-dimensional (2D) COF containing nickel-doped dehydrobenzoannulene (DBA) units. We demonstrate that Ni-DBA-2D-COF can be used to reductively cleave the aryl C-S bonds of several organosulfur compounds utilizing dimethylethylsilane as the reducing agent. The Ni-DBA-2D-COF catalytic system displays excellent recyclability and good yields. This work