A Facile One-Pot Three-Component Synthesis of Macrocyclic Imidazolidines by [3+2] Cycloaddition Reaction of Azomethine Ylides
作者:Raghavachary Raghunathan、Subban Kathiravan
DOI:10.1055/s-0029-1216631
日期:2009.4
One-potthree-componentsynthesis of novel macrocyclic imidazolidines has been accomplished in good yields via a facile [3+2] cycloaddition reaction of azomethine ylide, derived from paraformaldehyde and sarcosine, with various macrocyclic imines as dipolarophiles. The effect of solvent on the [3+2]-dipolar cycloaddition reaction is also studied.
Synthesis and characterization of macrocyclic and polymeric Schiff base complexes derived from related macrocyclic ligands in the presence of Ni(II) and Cu(II)
作者:Hassan Keypour、Hamid Zeynali、Majid Rezaeivala、Fariba Mohsenzadeh、Hadi Amiri Rudbari、Giuseppe Bruno、Akram Sadeghpour
DOI:10.1007/s13738-015-0641-9
日期:2015.9
were synthesized. All ligands and their related complexes were characterized by elemental analysis, IR spectroscopy, in the case of ligands 1H, 13C NMR and EI-Mass and for [Cu2L2′](NO3)2 and [NiL1(CH3CN)2(CH3OH)2](ClO4)2 complexes X-ray crystal structure determination have been performed. Crystal structure showed 1D zigzag polymer for [Cu2L 1′2 ](NO3)2 and macrocyclic structure for [NiL1(CH3CN)2(CH3OH)2](ClO4)2
Synthesis of 15-, 16-, and 17-Membered Bis-C-Pivot Macrocycles Consisting of N<sub>2</sub>O<sub>2</sub>Donor-Type Crown Ethers and Dialkyl Phosphonates
作者:Selen Bilge Koçak、Hale Üçkardeş
DOI:10.1002/hc.21054
日期:2012.11
Bis-C-pivotmacrocycles containing aminophosphonate functions (5–10) have been synthesized and characterized by elemental analysis, FTIR, MS, 1D 1H, 13C and 31P NMR, and 2D HETCOR techniques. The phosphorylation reaction of dibenzo-bis-imino crownethers (1–4) with dimethyl and diethyl phosphite used here has the potential to provide bis-C-pivotmacrocycles (5–10), which possess two stereogenic C-centers
已经合成了含有氨基膦酸酯官能团 (5-10) 的双 C 枢轴大环,并通过元素分析、FTIR、MS、1D 1H、13C 和 31P NMR 以及 2D HETCOR 技术进行了表征。二苯并双亚氨基冠醚 (1-4) 与此处使用的亚磷酸二甲酯和二乙酯的磷酸化反应有可能提供双 C 枢轴大环 (5-10),其具有两个立体 C 中心,从而产生非对映异构体(内消旋和外消旋)。根据化学位移、信号强度、自旋-自旋耦合常数和分裂模式,报告了化合物的内消旋和外消旋形式的详细光谱归属。bis-C-pivot 大环 (5-10) 可以作为一类潜在的超分子宿主分子。