An efficient synthesis of 6-arylbenzo[4,5]imidazo[2,1-a]isoquinolines via sequential α-arylation of carbonyl and deacylation catalyzed by CuI
作者:Wei-Qing Miao、Jian-Quan Liu、Xiang-Shan Wang
DOI:10.1039/c7ob01022b
日期:——
Dibenzoyl methane was found to undergo α-arylation of carbonyl and deacylation reaction with 2-(2-bromophenyl)-1H-benzo[d]imidazoles catalyzed by CuI in the presence of Cs2CO3, and provided an efficientsynthesis of 6-arylbenzo[4,5]imidazo[2,1-a]isoquinolines via subsequent intra-molecular nucleophilic addition and dehydration.
发现二苯甲酰甲烷在Cs 2 CO 3存在下与CuI催化的2-(2-溴苯基)-1 H-苯并[ d ]咪唑发生羰基的α-芳基化反应和脱酰反应,并有效合成了6 -芳基苯并[4,5]咪唑并[2,1- a ]异喹啉通过随后的分子内亲核加成和脱水作用。
CuI-catalyzed synthesis of (benzo)imidazo[2,1-a]isoquinolinone derivatives via successive α-arylation, deacylation and benzyl automatic oxidation
作者:Wei-Qing Miao、Jian-Quan Liu、Xiang-Shan Wang
DOI:10.1016/j.tet.2020.131200
日期:2020.5
be automatically oxidized by oxygen in the reaction of 2-(2-bromophenyl)-1H-imidazole and 1,3-dicarbonyl compounds catalyzed CuI. This domino procedure involved the subsequent α-arylation, deacylation, nucleophilic addition and benzyl automatic oxidation, and provided an efficient method for the synthesis of (benzo)imidazo[2,1-a]isoquinolinone derivatives in good yields.
在2-(2-溴苯基)-1H-咪唑与1,3-二羰基化合物催化的CuI的反应中,发现苄基位置被氧自动氧化。该多米诺步骤涉及随后的α-芳基化,脱酰基,亲核加成和苄基自动氧化,并提供了以高收率合成(苯并)咪唑并[2,1- a ]异喹啉酮衍生物的有效方法。
Copper(I)-catalyzed α-arylation of carbonyl cascade reaction leading to benzo[4, 5] imidazo[1,2-f]phenanthridin-4(1H)-one derivatives
作者:Fang Dong、Rong-Zhang Jin、Jian-Quan Liu、Xiang-Shan Wang
DOI:10.1007/s11164-017-2975-7
日期:2017.11
α-arylation of carbonylreaction and intra-molecular cyclization of 2-(2-bromophenyl)-1H-benzo[d]imidazoles with cyclohexane-1,3-diones was described in 1,4-dioxane catalyzed by Cu(I)/l-proline. It provided an efficient method for the synthesis of benzo[4, 5]imidazo[1,2-f] phenanthridin-4(1H)-ones with high efficiency in mild conditions. Graphical Abstract A sequential α-arylation of carbonylreaction and intra-molecular
摘要 在Cu(1,4-二恶烷)催化下,描述了羰基反应的顺序α-芳基化和2-(2-溴苯基)-1H-苯并[ d ]咪唑与环己烷-1,3-二酮的分子内环化I)/ l-脯氨酸 它为温和条件下高效合成苯并[4,5]咪唑并[1,2 - f ]菲啶-4(1 H)-提供了一种有效的方法。 图形概要 在Cu()催化的1,4-二恶烷中描述了羰基反应的顺序α-芳基化和2-(2-溴苯基)-1 H-苯并[ d ]咪唑与环己烷-1,3-二酮的分子内环化I)/ l-脯氨酸
Synthesis of Trinuclear Benzimidazole‐Fused Hybrid Scaffolds by Transition Metal‐Free Tandem C(sp
<sup>2</sup>
)−N Bond Formation under Microwave Irradiation
作者:Pham Duy Quang Dao、Chan Sik Cho
DOI:10.1002/ejoc.202100419
日期:2021.8.6
A class of trinuclear N-fused hybrid scaffolds was constructed by transition metal-freeC(sp2)-N coupling and cyclization of 2-(2-bromoaryl)- or 2-(2-bromovinyl)benzimidazoles with 2-methoxy- or 2-aryloxybenzimidazoles under microwave irradiation.
Construction of Binuclear Benzimidazole-Fused Quinazolinones and Pyrimidinones Using Aryl Isocyanates as Building Blocks by Transition-Metal-Free C(sp<sup>2</sup>)–N Coupling
作者:Pham Duy Quang Dao、Chan Sik Cho
DOI:10.1021/acs.joc.0c02067
日期:2020.10.16
of binuclear N-fused hybrid scaffolds was constructed by the reaction of 2-(2-bromoaryl)- and 2-(2-bromovinyl)benzimidazoles with aryl isocyanates as building blocks in the presence of a base under microwave irradiation. A nucleophilic addition followed by an unprecedented transition-metal-free C(sp2)–N coupling is proposed as a reaction pathway of this green process.