4-取代的1-苄基-5-二苯基stibano- 1 H -1,2,3-三唑的合成,抗肿瘤活性和细胞毒性
摘要:
在CuBr(5 mol)存在下,通过铜催化的各种乙炔基苯乙烯(1)与苄基叠氮化物(2)的叠氮化物-炔烃环加成反应,合成了三取代的5-organostibano-1 H -1,2,3-三唑(3a–f)。%)在有氧条件下。5-stibanotriazoles与HCl的反应得到C5未取代的1,2,3-三唑(4a–f)。在几种肿瘤细胞系中评估了三取代的5-有机ostibano-1 H -1,2,3-三唑(3a–f)及其5-未取代的1,2,3-三唑(4a–f)的抗肿瘤活性。所有5-stibanotriazoles(3a–f)发挥了出色的抗肿瘤活性。相反,与5-stibanotriazoles(3a-f)相比,分子中不具有二苯基锑基团的5-un取代的1,2,3-三唑(4a-f)表现出非常低的抗肿瘤活性。在这两个系列的化合物中,取代的4-丁基似乎降低了抗肿瘤活性。但是,结果表明,分子中的有机金属(锑)需
Copper-catalyzed carbon–carbon bond cleavage of primary propargyl alcohols: β-carbon elimination of hemiaminal intermediates
作者:Ye-Won Kang、Yu Jin Cho、Kwang-Youn Ko、Hye-Young Jang
DOI:10.1039/c5cy00783f
日期:——
The copper-catalyzed cleavage of carbon–carbon bonds in primary propargyl alcohols under oxygen was investigated. This process involves the formation and fragmentation of hemiaminals from aldehydes (oxidized alcohols) and amines. This reaction mechanism was supported by the formation of N-formyl amines and GC experimental results.
Heterogeneous Copper Catalyst for the Cycloaddition of Azides and Alkynes without Additives under Ambient Conditions
作者:In Soo Park、Min Serk Kwon、Youngkwon Kim、Jae Sung Lee、Jaiwook Park
DOI:10.1021/ol702790w
日期:2008.2.1
A new copper catalyst was developed by immobilizing copper nanoparticles in aluminum oxyhydoxide fiber. The catalyst showed high catalytic activity for the (3+2) Huisgencycloaddition of nonactivated alkynes as well as activated ones with various azides at room temperature. The catalyst was recycled five times without significant loss of activity.
Efficient synthesis of 1,4-disubstituted 1,2,3-triazoles in ionic liquid/water system
作者:Ya-Bin Zhao、Ze-Yi Yan、Yong-Min Liang
DOI:10.1016/j.tetlet.2006.01.004
日期:2006.3
A copper(I) catalyst in a mixture of the ionic liquid [bmim][BF4] and water, can effect three-component reaction of halides, sodium azide and alkynes to form 1,4-disubstituted 1,2,3-triazoles in good to high yields. The method is efficient and environmentally friendly.
Highly Efficient and Stable Atomically Dispersed Cu Catalyst for Azide‐Alkyne Cycloaddition Reaction
作者:Peng Ren、Qinglin Li、Tao Song、Zhaozhan Wang、Ken Motokura、Yong Yang
DOI:10.1002/cctc.202100831
日期:2021.9.17
In this study, we report a highly stable and efficient single-atom Cu dispersed on N-doped porous carbon as a superior catalyst for azide-alkynecycloaddition reaction. A broad set of 1,4-disubstituted 1,2,3-triazoles was synthesized in high to excellent yields with good tolerance of various functional groups in a cost-effective, environment-friendly manner. Parallel studies show that the single-atom
在这项研究中,我们报告了一种分散在 N 掺杂多孔碳上的高度稳定和高效的单原子 Cu 作为叠氮化物-炔烃环加成反应的优良催化剂。以具有成本效益、环境友好的方式以高到优异的收率合成了广泛的 1,4-二取代 1,2,3-三唑,对各种官能团具有良好的耐受性。平行研究表明,具有独特配位结构的单原子铜表现出优于金属铜纳米颗粒类似物的催化活性。值得注意的是,单原子铜催化剂表现出强大的稳定性,可以多次重复使用,而不会改变活性和区域选择性。
2-Pyrrolecarbaldiminato–Cu(<scp>ii</scp>) complex catalyzed three-component 1,3-dipolar cycloaddition for 1,4-disubstituted 1,2,3-triazoles synthesis in water at room temperature
作者:Changjian Zhou、Jie Zhang、Ping Liu、Jianwei Xie、Bin Dai
DOI:10.1039/c4ra13423k
日期:——
2-Pyrrolecarbaldiminato–Cu(ii) complexes were first established as efficient catalyst for 1,4-disubstituted 1,2,3-triazoles synthesis under green and mild reaction conditions.