成功制备了纳米级CdS,对其进行了充分表征,并将其用作高效可重复使用的光催化剂,用于通过缩合反应合成吡咯并[3,4- c ]喹诺酮和吡咯并[2,1 - a ]异喹啉-8-羧酸酯衍生物的ñ,ñ -dimethylanilines或烷基2-(3,4-二氢异喹啉-2(1 H ^) -基)乙酸酯与马来酰亚胺通过一个C-H活化在室温下良性和生态友好的条件下的方法,而无需使用任何溶剂,并且可见光照射下的氧化剂。此外,所制备的光催化剂已成功地用于N,N的缩合反应。-二甲基苯胺与烷基丁-2-炔基或苯基乙炔的合成,首次用于合成新的1,2-二氢喹啉-3,4-二羧酸酯和芳基1,2-二氢喹啉衍生物。使用这种方法,通过使用可再生能源可见光辐照,可以在良性条件下以良好的收率和较短的反应时间获得所有有利的产物。该催化剂易于回收并重复使用几次,而不会损失其活性。
Alizarin red S–TiO<sub>2</sub>-catalyzed cascade C(sp<sup>3</sup>)–H to C(sp<sup>2</sup>)–H bond formation/cyclization reactions toward tetrahydroquinoline derivatives under visible light irradiation
A very low amount of organic dye (Alizarin red S) sensitized TiO2 and it was successfully used to catalyze cascade C(sp3)–H to C(sp2)–H bondformation/cyclization reactions under visible light irradiation. The modified TiO2 photocatalyst efficiently, for the first time, advanced [4+2] cyclization of N,N-dimethylanilines and maleimides to the corresponding tetrahydroquinolines in air atmosphere. The
Synthesis, characterziation, semi-empirical quantum-mechanical study and biological activity of organotin(IV) complexes with 2-ethylanilinocarbonylpropenoic acid
作者:N. Tabassam、S. Ali、S. Shahzadi、M. Shahid、M. Abbas、Q. M. Khan、S. K. Sharma、K. Qanungo
DOI:10.1134/s1070363213120396
日期:2013.12
Seven different organotin(IV) complexes have been synthesized by reacting 2-ethylanilinocarbonylpropenoic acid with R2SnCl2/R3SnCl under reflux conditions. The organotin(IV) complexes along with ligand have been characterized by different techniques including elemental analysis, FT-IR and multinuclear NMR (1H and 13C). IR data show that complexation occurs through -COO site and the ligand is bidentate
通过使2-乙基苯胺基羰基丙烯酸与R 2 SnCl 2 / R 3 SnCl在回流条件下反应,已经合成了七种不同的有机锡(IV)配合物。有机锡(IV)配合物以及配体已通过不同技术进行了表征,包括元素分析,FT-IR和多核NMR(1 H和13 C)。红外数据表明,络合物是通过-COO位点发生的,并且配体是双齿的,这也被半经验量子力学研究所证实。1 H和13 C NMR数据证实了溶液中络合物的四面体几何形状。还检查了配合物和配体的各种
Access to 8-Azabicyclo[3,2,1]octanes via the [3 + 2] Cycloaddition of Oxidopyridinium Ions to Maleimides
作者:Cheng Yuan、Sheng Sun、Gangqiang Wang、Shaofa Sun、Jian Wang
DOI:10.1021/acs.joc.3c00406
日期:2023.7.7
Herein, we reported a unique and operationally simple method to assemble 8-azabicyclo[3,2,1]octanes by using oxidopyridinium ions and maleimides as synthons. The features of good to high yields and good functional group tolerance are achieved regularly under mild conditions. Of note, oxidopyridinium ions undergo a [3 + 2] cycloaddition on their C2 and C6 positions.