1,3,5-Triaza-7-phosphaadamantane (PTA): A Practical and Versatile Nucleophilic Phosphine Organocatalyst
作者:Xiaofang Tang、Bo Zhang、Zhengrong He、Ruili Gao、Zhengjie He
DOI:10.1002/adsc.200700071
日期:2007.8.6
cycloaddition reaction of 4-substituted 2,3-butadienoates with N-tosylimines, PTA is also proven to be a comparable catalyst as tributylphosphine (PBu3). By systematic comparison with other structurally similar N,P catalysts, it is concluded that the superiority of PTA in the above nucleophilic catalysis is attributable to its comparable nucleophilicity with that of trialkylphosphines. The feasibility
Synthesis of 2-Amino-3,4-dihydroquinazolines and Imidazo[2,1-b]quinazoline-2-ones¹
作者:Sanjay Batra、Amita Mishra
DOI:10.1055/s-0029-1217603
日期:2009.9
SN2 reaction of a primary amine on the Baylis-Hillman acetate derived from 2-nitrobenzaldehyde, cyanogen bromide-mediated nitrile addition, and iron-acetic acid promoted reductive cyclization. This approach is also applied to the preparation of imidazo[2,1-b]quinazoline-2-ones and imidazo[2,1-b]quinazolines in one pot. quinazoline - anagrelide - Baylis-Hillman - imidazo[2,1-b]quinazoline -allyl amine
公开了由Baylis-Hillman衍生物合成2-氨基-3,4-二氢喹唑啉的直接方法。该方案涉及伯胺在源自2-硝基苯甲醛的Baylis-Hillman乙酸酯上的顺序S N 2反应,溴化氰介导的腈加成反应以及铁乙酸促进的还原环化反应。该方法也适用于在一锅中制备咪唑并[ 2,1- b ]喹唑啉-2-ones和咪唑并[2,1- b ]喹唑啉。 喹唑啉-Anagrelide-Baylis-Hillman-咪唑并[2,1- b ]喹唑啉-烯丙基胺 CDRI通讯第7780号。
Correlation between electrochemical and theoretical studies on the leishmanicidal activity of twelve Morita-Baylis-Hillman adducts
作者:Yen G. de Paiva、Antônio A. de Souza、Claudio G. Lima-Junior、Fábio P. L. Silva、Edilson B. A. Filho、Camila C. de Vasconcelos、Fabiane C. de Abreu、Marília O. F. Goulart、Mário L. A. A. Vasconcellos
DOI:10.1590/s0103-50532012000500015
日期:——
nitroaromatic compounds. Electrochemical methods are useful tools to simulate in vivo metabolic processes. This work presents electrochemical studies in aprotic media (N, N-dimethylformamide (DMF) plus tetrabutylammonium perchlorate (TBAP) 0.1 mol L-1) using cyclic voltammetry (CV), differential pulse voltammetry (DPV) and square wave voltammetry (SWV) of twelve Morita-Baylis-Hillman adducts (MBHA) with significant
Electrochemical and computational studies, in protic medium, of Morita-Baylis-Hillman adducts and correlation with leishmanicidal activity
作者:Yen G. de Paiva、Waldomiro Pinho Júnior、Antonio A. de Souza、Cícero O. Costa、Fábio P.L. Silva、Cláudio G. Lima-Junior、Mario L.A.A. Vasconcellos、Marília O.F. Goulart
DOI:10.1016/j.electacta.2014.05.066
日期:2014.9
Enzymatic bioreduction of nitro groups plays an important role on the activity of biologically active nitroaromatic compounds. Electrochemical methods are useful tools to simulate in vivo metabolic processes. This work presents electrochemical studies, in protic media (EtOH + phosphate buffer 4:6), using cyclic voltammetry (CV) of twelve Morita-Baylis-Hillman adducts (MBHA) with significant leishmanicidal
硝基的酶促生物还原作用对生物活性硝基芳族化合物的活性起重要作用。电化学方法是模拟体内代谢过程的有用工具。这项工作介绍了质子介质(EtOH +磷酸盐缓冲液4:6)中的电化学研究,使用了十二种具有显着杀菌活性的Morita-Baylis-Hillman加合物(MBHA)的循环伏安法(CV)。为了便于分析,根据分子的侧链将其分为四类。在所有情况下,循环伏安图仅显示与相应羟胺形成有关的一个阴极波,该羟胺遭受进一步的氧化,从而在一个连续的循环中生成亚硝基衍生物。邻位与同一个化学类别的其他异构体相比,该化合物显示出更多的负还原电位。该现象不仅与结构效应有关,而且与在电还原过程中和/或所得羟胺的稳定化过程中存在溶剂化球有关。根据理论计算(HF / 6-31 + G * / PCM,水,作为计算水平),提出了解释邻位化合物与间位化合物和对位化合物相比具有更高的杀真菌活性的建议,这表明较低的热力学稳定性与相应的meta和para相比,ortho
The Baylis–Hillman approach to quinoline derivatives
作者:Oluwole B. Familoni、Phindile J. Klaas、Kevin A. Lobb、Vusumzi E. Pakade、Perry T. Kaye
DOI:10.1039/b608592j
日期:——
Baylis-Hillman reactions of 2-nitrobenzaldehydes with various activated alkenes afford adducts that undergo reductivecyclisation to quinoline derivatives. The chemo- and regioselectivity of cyclisation appears to be influenced by the choice of both the substrate and the reagent system, and competing reactions have been observed.