has been found that readily available hydroxylated cinnamic acids such as ferulic acid undergo palladium‐catalyzed decarboxylative coupling with aryl iodides and internal alkynes in a 1:1:1 manner to produce 1,4‐diarylbuta‐1,3‐dienes. The butadiene synthesis has also been achieved through the coupling of aryl halides with dienoic acids. Some of the products exhibit solid‐state fluorescence.
A domino reaction for the synthesis of pyrrolo[2,1-<i>a</i>]isoquinolines from 2-aryl-pyrrolidines and alkynes promoted by a four-component catalytic system under aerobic conditions
作者:Zheng Luo、Huayou Hu、Chao Wang、Zhen Yang、Yefei Wang
DOI:10.1039/d3ra07653a
日期:——
derivatives were synthesized from 2-aryl-pyrrolidines and alkynes via an oxidative dehydrogenation/cyclization coupling/dehydrogenative aromatization domino process. This reaction was promoted by a four-component catalyticsystem which included [RuCl2(p-cymene)]2, CuCl, copper acetate monohydrate and TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) underaerobicconditions.
以2-芳基吡咯烷和炔烃为原料,通过氧化脱氢/环化偶联/脱氢芳构化多米诺反应合成吡咯并[2,1- a ]异喹啉衍生物。该反应由包括[RuCl 2 ( p-伞花烃)] 2 、CuCl、乙酸铜一水合物和TEMPO(2,2,6,6-四甲基-1-哌啶氧基)的四组分催化体系在有氧条件下促进。
Synthesis of Sulfonimidamide‐Based 1,2‐Benzothiazines by [4+2] Oxidative Annulation of Sulfonimidamides and Alkynes in Water under Visible Light
作者:K. Natarajan、S. Ravindra、V. R. Padma Priya、Ramesh Kataria、Ganesh Chandra Nandi
DOI:10.1002/ejoc.202301217
日期:2024.2.12
Sulfonimidamide (SIA)-based 1,2-benzothiazines were prepared by a [4+2] annulation reaction. The products were further transformed into o-acyl-N-acyl SIAs and a SIA-based dihydro-1,2-benzothiazine through oxidative C=C cleavage and selective C=C reduction, respectively.
Bischler–Napieralski Synthesis of Polycyclic N-Heteroaromatics Based on Tf<sub>2</sub>O-Promoted Electrophilic Activation of <i>N</i>-Aryl-2-Propynamides
作者:Lidong Shan、Yunxiang Weng、Hongchen Li、Lin Min、Xinyan Wang、Yuefei Hu