Copper-catalysed cyanoalkylative cycloetherification of alkenes to 1,3-dihydroisobenzofurans: development and application to the synthesis of citalopram
作者:Tu M. Ha、Qian Wang、Jieping Zhu
DOI:10.1039/c6cc06356j
日期:——
A copper-catalysed cyanoalkylative cycloetherification of alkenes was developed. Heating a solution of substituted (2-vinylphenyl)methanol in MeCN/MeOH (v/v 7/3) in the presence of a catalytic amount of copper (II) tetrafluoroborate hydrate...
开发了铜催化的烯烃的氰基烷基化环醚化。在催化量的四氟硼酸铜(II)水合物存在下,加热取代的(2-乙烯基苯基)甲醇在MeCN / MeOH(v / v 7/3)中的溶液...
Metal-Free Arylation-Lactonization Sequence of <i>γ</i>
-Alkenoic Acids Using Anilines as Aryl Radical Precursors
作者:Diego Felipe-Blanco、Jose C. Gonzalez-Gomez
DOI:10.1002/ejoc.201901679
日期:2019.12.19
This work was generously supported by the Spanish Ministerio de Economia y Competitividad (MINECO; grant no. CTQ2017–88171-P) and the Generalitat Valenciana (GV; grant no. AICO/2017/007).
Palladium-mediated total synthesis of 2-styrylbenzoic acids: a general route to 2-azachrysenes
作者:Carme Pampı́n、Juan C Estévez、Luis Castedo、Ramón J Estévez
DOI:10.1016/s0040-4039(02)00731-1
日期:2002.6
We describe a new total synthesis of 2-styrylbenzoic acids by Heck coupling of methyl o-iodobenzoates to styrenes. Additionally, in the first generalsynthesis of naphtho[2,1-f]isoquinolines, these acids were transformed into phenanthrenoic acids and thence into the target compounds by a six-step sequence including a Bischler–Napieralski cyclization.
我们描述了一种新的2-苯乙烯基苯甲酸的全合成,其是将邻碘苯甲酸甲酯与苯乙烯进行Heck偶联。此外,在萘并[2,1- f ]异喹啉的第一个常规合成中,这些酸被转化为菲烯酸,然后通过包括Bischler-Napieralski环化在内的六步法转化为目标化合物。
Heck-mediated synthesis and photochemically induced cyclization of [2-(2-styrylphenyl)ethyl]carbamic acid ethyl esters and 2-styryl-benzoic acid methyl esters: total synthesis of naphtho[2,1f]isoquinolines (2-azachrysenes)
作者:M Carme Pampı́n、Juan C Estévez、Ramón J Estévez、Miguel Maestro、Luis Castedo
DOI:10.1016/s0040-4020(03)01073-1
日期:2003.9
The first synthesis consists of a Heck coupling reaction between trifluoromethanesulfonic acid 2-(2-ethoxycarbonylaminoethyl)phenyl esters and styrenes to give [2-(2-styrylphenyl)ethyl]carbamic acidethyl esters. These compounds cyclize to give (2-phenanthren-1-yl-ethyl)carbamic acidethyl esters, from which 2-azachrysenes can be obtained in a three-step sequence. The second synthesis includes a new
我们描述了萘[2,1- f ]异喹啉的两个新的紧密相关的总合成。第一合成包括三氟甲磺酸2-(2-乙氧基羰基氨基乙基)苯基酯与苯乙烯之间的Heck偶联反应,得到[2-(2-苯乙烯基苯基)乙基]氨基甲酸乙酯。这些化合物环化得到(2-菲基-1-基-乙基)氨基甲酸酯乙酯,可以通过三个步骤从中获得2-氮杂ach烯。第二合成包括通过2- styrylbenzoic酸甲酯新的全合成的Heck甲基的耦合ö碘苯甲酸酯成苯乙烯,然后通过包括Bischler-Napieralski环化在内的六步序列将所得苯甲酸衍生物转化为菲-1-羧酸甲酯,然后转化为目标化合物。
Synthesis of CHF<sub>2</sub>-Containing Heterocycles through Oxy-difluoromethylation Using Low-Cost 3D Printed PhotoFlow Reactors
作者:Jinlei Zhang、Elias Selmi-Higashi、Shen Zhang、Alexandre Jean、Stephen T. Hilton、Xacobe C. Cambeiro、Stellios Arseniyadis
DOI:10.1021/acs.orglett.3c03997
日期:2024.4.12
We report here a highly straightforward access to a variety of CHF2-containing heterocycles, including lactones, tetrahydrofurans, tetrahydropyrans, benzolactones, phthalanes, and pyrrolidines, through a visible light-mediated intramolecular oxy-difluoromethylation under continuous flow. The method, which relies on the use of readily available starting materials, low-cost 3D printed photoflow reactors