Regio- and Stereoselective Nickel-Catalyzed Coupling of Boronic Acids with Allenoates
作者:Marco Bandini、Yang Liu、Mario Daka
DOI:10.1055/s-0037-1610023
日期:2018.8
The Ni(II)-catalyzed cross-coupling of arylboronic acids with allenoates is documented. The high regio- and stereoselectivity of the process enables a wide range of β-aryl β,γ-unsaturated esters to be prepared in good to excellent yields (up to 95%) and high E/Z-selectivity. Additionally, [3+2]-cascade sequence was observed when 2-formylphenylboronic acid was employed. The Ni(II)-catalyzed cross-coupling
A New Method for the Synthesis of 1-Methyl-1H-indole-3-carboxylate Derivatives, Employing Copper(II)
作者:Ali Akbari、Muhammad Saleh Faryabi
DOI:10.1055/a-2035-0040
日期:——
1-methyl-1H-indole-3-carboxylates by cross-dehydrogenative coupling. However, the coupling reactions are a way to functionalize the α-carbon of iminiums from tertiary amines. The synthesis of 1-methyl-1H-indole-3-carboxylates from N,N-dimethylaniline with bromoacetates has not been reported. In the present work, we describe a novelroute for synthesizing 1-methyl-1H-indole-3-carboxylates with N,N-dimethylaniline
我们报告了一种通过交叉脱氢偶联合成 1-methyl-1 H -indole-3-carboxylates 的有效方法。然而,偶联反应是一种从叔胺中官能化亚胺的 α-碳的方法。从N , N-二甲基苯胺和溴乙酸盐合成 1-methyl- 1H- indole-3-carboxylates的报道尚未见报道。在目前的工作中,我们描述了一种合成 1-methyl-1 H -indole-3-carboxylates with N , N的新路线-二甲基苯胺和范围广泛的溴乙酸苯酯衍生物。程序简单、产率高至极佳 (69–90%) 等特点使该方法成为在叔丁基存在下使用 Cu(OAc) 2 ·H 2 O作为催化剂制备吲哚衍生物的高效程序氢过氧化物。
HIMBERT, GERHARD;FINK, DIETER;DIEHL, KLAUS, CHEM. BER., 121,(1988) N 3, 431-441
作者:HIMBERT, GERHARD、FINK, DIETER、DIEHL, KLAUS
DOI:——
日期:——
Low‐Temperature Intramolecular [4+2] Cycloaddition of Allenes with Arenes for the Synthesis of Diene Ligands
作者:Durga Prasad Hari、Guillaume Pisella、Matthew D. Wodrich、Artem V. Tsymbal、Farzaneh Fadaei Tirani、Rosario Scopelliti、Jerome Waser
DOI:10.1002/anie.202012299
日期:2021.3
The intramolecular [4+2] cycloaddition between arenes and allenes first reported by Himbert gives rapid access to rigid polycyclic scaffolds. Herein, we report a one‐pot oxyalkynylation/cycloaddition reaction proceeding under mild conditions (23–90 °C) and providing complex polycyclic architectures with high efficiency, and atom and step economy. The bicyclo[2.2.2]octadiene products were obtained with