在目前的工作中,包括 Zn (II) 和N-十六烷基咪唑配体的同核配位络合物首次用作合成 3,4-二氢-2 H -1,3-苯并恶嗪单体的高效均相中性有机催化剂. 因此,通过曼尼希型缩合反应成功合成了N-烷基或N-芳基取代的单苯并恶嗪和双苯并恶嗪(21 个实例)。毫不费力地以高收率和短反应时间获得纯产物,使该方法比现有的常见苯并恶嗪合成方法更有用和更有利。
Structure—bacteriostatic activity relationship for 2-aminomethylphenols and their ammonium salts
作者:L. A. Kudryavtseva、Zh. V. Molodykh、I. S. Ryzhkina、R. A. Shagidullina、I. V. Timofeeva、V. E. Bel'skii
DOI:10.1007/bf02464155
日期:1997.4
Phenols and their derivatives obey certain quantitative relationships between parameters of their molecular structure and biological activity [1 -5 ] . This is also valid for 2-aminomethylphenols (AMPs) [1, 2]. Previous investigations have demonstrated that the biological activity of AMPs, their tertiary ammonium salts [1, 2], and phenols [3] depend primarily on the hydrophobicity of substituents in
Reaction of 2-alkylaminomethylphenols with 4-nitrophenyl-bis(chloromethyl)phosphinate in toluene micellar solutions of polyethylene glycol-600 monolaurate
作者:E. P. Tishkova、R. A. Shagidullina、L. A. Kudryavtseva、I. E. Ismaev、B. E. Ivanov
DOI:10.1007/bf00700160
日期:1994.12
dependence of the micellar-catalyzed-reaction rate constants. The reaction rate constant in the micellar phase and the binding constant of the substrate with micelles depend on the alkyl chain length and AMP concentration. Inhibition of the reaction studied is observed in the presence of high PEG-ML concentrations and low AMP concentrations.
Sustainable synthetic approaches using [C16Im][Oxa] as a flexible organocatalyst and DFT studies toward 3,4-dihydropyrimidinones and benzoxazines
作者:Ayhan Yıldırım、Yunus Kaya
DOI:10.1007/s00706-016-1894-4
日期:2017.6
Easily accessible 1-hexadecyl-1H-imidazol-3-ium oxalate is highly efficient Bronsted type acidic catalyst for the selected multicomponent one-pot reactions. The short reaction times, easy workup procedures, and green metal-free conditions for the reactions make the protocols more advantageous. Further reactions proceeded smoothly in good to excellent yields with high purity. To investigate mechanism of the multicomponent reactions, DFT calculations were performed.
Screening of simple carbohydrates as a renewable organocatalyst for the efficient construction of 1,3-benzoxazine scaffold
作者:Ayhan Yıldırım、Yunus Kaya、Mustafa Göker
DOI:10.1016/j.carres.2021.108458
日期:2021.12
performed to study the detailed mechanism of organocatalyst assisted synthesis of the benzoxazinemonomers. The results obtained from these calculations showed that the more realistic reaction pathway involves formation of a phenolate based intermediate which loses a water molecule to form benzenaminium ion. Subsequently, this ion provides the formation of the corresponding benzoxazines with good yields
<i>N</i>
‐alkyl imidazole‐based homonuclear coordination complex as a neutral organocatalyst for the faster and efficient construction of 3,4‐dihydro‐2
<i>H</i>
‐1,3‐oxazine scaffold
作者:Ayhan Yıldırım、Mustafa Göker
DOI:10.1002/aoc.6425
日期:2021.12
N-hexadecylimidazole ligand was used for the first time as a highly efficient homogeneous neutral organocatalyst for the synthesis of 3,4-dihydro-2H-1,3-benzoxazine monomers. Therefore, N-alkyl or N-arylsubstituted, both mono-benzoxazine and bis-benzoxazine, were successfully synthesized (21 examples) via Mannich-type condensation reactions. Effortlessly obtaining the pure product with high yields
在目前的工作中,包括 Zn (II) 和N-十六烷基咪唑配体的同核配位络合物首次用作合成 3,4-二氢-2 H -1,3-苯并恶嗪单体的高效均相中性有机催化剂. 因此,通过曼尼希型缩合反应成功合成了N-烷基或N-芳基取代的单苯并恶嗪和双苯并恶嗪(21 个实例)。毫不费力地以高收率和短反应时间获得纯产物,使该方法比现有的常见苯并恶嗪合成方法更有用和更有利。