Auto de-bromine-coupling reactions of 1-aryl-7-bromocycloheptenes
摘要:
Auto de-bromine-coupling reactions of 1-aryl-7-bromocycloheptenes to a new series of [7-6-6] tricyclic system were described. A variety of substituents at the para-position of the phenyl were amenable to this transformation, including electron-donating groups and halides. The presence of electron-donating groups resulted in a more efficient reaction, with higher yields than the case of halides. (C) 2014 Elsevier Ltd. All rights reserved.
Iodobenzene-catalyzed oxidative cleavage of olefins to carbonyl compounds
作者:Lele Du、Zechao Wang、Junliang Wu
DOI:10.1016/j.tetlet.2020.152204
日期:2020.8
A metal-free approach for the oxidativecleavage of carbon–carbon double bonds of olefins to carbonyl compounds was established by using oxidant m-CPBA and non-metallic organocatalyst PhI in toluene/H2O. A broad scope of aromatic olefins was used. All the reactions proceeded smoothly at 35 °C in short reaction time to furnish the respective mono- and double carbonyl compounds selectively in moderate
通过使用氧化剂m -CPBA和甲苯/ H 2 O中的非金属有机催化剂PhI,建立了一种无金属的方法将烯烃的碳-碳双键氧化裂解为羰基化合物。使用了广泛的芳族烯烃。所有反应均在35°C的短时间内顺利进行,以中等至良好的收率选择性提供各自的单羰基化合物和双羰基化合物。