N,N'-Bis-[1-(2-chloro-phenyl)-meth-(E)-ylidene]-benzene-1,2-diamine 在
对甲苯磺酸 作用下,
以
neat (no solvent) 为溶剂,
以92%的产率得到2-(2-氯苯基)-1-[(2-氯苯基)甲基]苯并咪唑
参考文献:
名称:
Facile Synthesis of 1,2-Disubstituted Benzimidazoles Usingp-Toluenesulfonic Acid through Grinding
Method
摘要:
An efficient synthetic method for the highly selective synthesis of pharmacologically active 1,2-disubstituted benzimidazole derivatives fromo-phenylenediamine and various aromatic aldehydes catalyzed byp-toluenesulfonic acid through grinding under solvent-free condition is described. The reaction requires the catalyst only during the conversion of intermediateN,N '-dibenzylidene-o-phenylenediamine into the desired product. The products were obtained within a short time with good yields by using only a mortar and pestle, which makes the proposed method convenient and cost-effective.
The synthesis and structure of an amazing and stable carbonized material Cu-PC@OFM and its catalytic applications in water with mechanism explorations
作者:An-Qi Tian、Xiang-Hao Luo、Zhi-Lin Ren、Jun Zhao、Long Wang
DOI:10.1039/d1nj00861g
日期:——
structure, but also the nano copper particles generated in situ significantly improve the catalytic performance and stability. It was disclosed that the copper-based catalyst material Cu-PC@OFM showed high catalytic activity in the borrowing hydrogen reaction and the synthesis of 1-benzyl-2-aryl-1H-benzo[d]imidazole derivatives with high yields in water. This coppercatalytic system provided a much greener
通过HRTEM,SEM,XRD,XPS和拉曼光谱以及氮吸附/解吸分析,合成并表征了一种令人惊奇且稳定的碳化八面体框架材料Cu-PC @ OFM。特别地,负载有纳米铜的碳基质载体不仅保持原始结构,而且原位产生的纳米铜颗粒也显着改善了催化性能和稳定性。公开了铜基催化剂材料Cu-PC @ OFM在借位氢反应和1-苄基-2-芳基-1 H-苯并[ d]的合成中显示出高催化活性。]咪唑衍生物在水中的产率高。该铜催化体系为合成功能化的胺和1-苄基-2-芳基-1 H-苯并[ d ]咪唑在水中具有良好的回收性能提供了更加绿色和高效的催化剂,这是Cu-的第一个实例。 PC @ OFM材料催化的1-苄基-2-芳基-1 H-苯并[ d ]咪唑的合成。此外,通过一些条件控制实验,氘标记实验和中间体分离实验,提出了合理的反应机理。
Ligand-tuned cobalt-containing coordination polymers and applications in water
作者:Rong Tao、Yike Yang、Haiyan Zhu、Xinyu Hu、Dawei Wang
DOI:10.1039/d0gc02341h
日期:——
could promote the alkylation of ketones with alcohols and alcohols with alcohols, while Co-NCIA was effective for the synthesis of 1-benzyl-2-aryl-1H-benzo[d]imidazoles from various phenylenediamine and benzyl alcohols through borrowing hydrogen and dehydrogenation strategies. Other mechanism explorations, such as deuterium labeling experiments and a kinetics study, were conducted to better understand
Synthesis of functionalized benzimidazoles and quinoxalines catalyzed by sodium hexafluorophosphate bound Amberlite resin in aqueous medium
作者:Pranab Ghosh、Amitava Mandal
DOI:10.1016/j.tetlet.2012.09.045
日期:2012.11
for the selective synthesis of 1,2-disubstitutedbenzimidazoles and quinoxalines in water–methanol (1:1) mixture with the aid of resin bound hexafluorophosphate ion as catalyst is reported. The method is also effective for the incorporation of quinoxaline nucleus at the A ring of pentacyclic triterpenoid, friedelin. A plausible mechanism for the formation of disubstituted benzimidazole has also been suggested
Synthesis of 1,2-disubstituted benzimidazoles, 2-substituted benzimidazoles and 2-substituted benzothiazoles in SDS micelles
作者:Kiumars Bahrami、Mohammad M. Khodaei、Akbar Nejati
DOI:10.1039/c000047g
日期:——
A practical and convenient synthetic method has been developed for the facile synthesis of 1,2-disubstituted benzimidazoles, 2-substituted benzimidazoles and 2-substituted benzothiazoles. The method described has the benefits of operational simplicity, excellent yields, and high chemoselectivity.
BINAP-copper supported by hydrotalcite as an efficient catalyst for the borrowing hydrogen reaction and dehydrogenation cyclization under water or solvent-free conditions
作者:Zhaojun Xu、Xiaoli Yu、Xinxin Sang、Dawei Wang
DOI:10.1039/c8gc00557e
日期:——
A BINAP-Cu system supported by hydrotalcite has been developed and proved to be a highlyefficientcatalyst for the atom-efficient and green borrowing hydrogen reaction and dehydrogenative cyclization. This BINAP-Cu complex supported by hydrotalcite is highly air-stable and can be recycled at least five times under solvent-free conditions. Notably, 1-benzyl-2-aryl-1H-benzo[d]imidazole derivatives could
已经开发了由水滑石支撑的BINAP-Cu系统,并被证明是一种高效的催化剂,用于原子效率高的绿色借入氢反应和脱氢环化反应。这种由水滑石负载的BINAP-Cu络合物具有高度的空气稳定性,在无溶剂条件下可以循环至少五次。值得注意的是,第一次以水为溶剂仅一步即可由醇合成1-苄基-2-芳基-1 H-苯并[ d ]咪唑衍生物。这为在水或无溶剂条件下以高收率合成官能化的胺,酮和1-苄基-2-芳基-1 H-苯并[ d ]咪唑衍生物提供了一种更加绿色有效的催化方法。