Electrochemical Oxidative C−H/N−H Coupling between γ-Lactams and Anilines
作者:Ming Gong、Jing-Mei Huang
DOI:10.1002/chem.201602454
日期:2016.9.26
A mild method for the direct C−H/N−H coupling between γ‐lactams and anilines through electrochemical oxidation has been developed. The protocol proceeded smoothly without metal catalysts at room temperature to afford γ‐substituted γ‐lactams in good yields. It has been revealed that the quasi‐divided cell which provided high current density on the anode was crucial for this reaction.
Pterolactam (5-methoxypyrrolidin-2-one) is a heterocycle naturally occurring in plants. In an attempt to identify antifungal agents, a series of novel Mannichbases of amide derivated from Pterolactam have been designed, synthesized and their antifungal activities were evaluated on a panel of nine fungal strains and three non albicans candida yeasts species which have demonstrated reduced susceptibility
As new environmentally friendly and effective antifungal agents are deeply needed, efficient ecofriendly strategies were designed to access two series of compounds inspired from natural γ-lactams. Designed compounds were fully characterized and evaluated as antifungal candidates against Zymoseptoria tritici, the main pathogen on wheat crops. The targeted derivatives were prepared from natural resources
由于迫切需要新的环保和有效的抗真菌剂,因此设计了有效的环保策略来获得受天然 γ-内酰胺启发的两个系列化合物。设计的化合物经过充分表征和评估,可作为小麦作物的主要病原体小麦酵母菌的抗真菌候选物。目标衍生物是使用绿色溶剂、简单的程序和有限的纯化步骤从自然资源中制备的。这些受生物启发的化合物显示为进一步开发高效作物保护产品的良好候选者。事实上,HIT 化合物表现出 IC 50大约 1 μg/mL 并且比参考戊唑醇和联苯胺对一些多重耐药菌株更有效。每个系列都获得了两打衍生物,可以建立早期的构效关系,用于开发具有更高功效的下一代 γ-内酰胺衍生物。
FeCl3 catalyzed sp3 C–H amination: synthesis of aminals with arylamines and amides
作者:Manman Sun、Tianshui Zhang、Weiliang Bao
DOI:10.1016/j.tetlet.2013.12.043
日期:2014.1
A simple and efficient amination of sp3C–Hbondsadjacent to a nitrogenatom in amides was introduced. The reaction was catalyzed by cheap and low toxic iron salt and used arylamines as nitrogen source. It provides a straightforward construction of acyclic aminals under mild conditions.
Copper catalyzed oxidative cross-coupling of aromatic amines with 2-pyrrolidinone: a facile synthesis of N-aryl-γ-amino-γ-lactams
作者:S. Priyadarshini、P.J. Amal Joseph、M. Lakshmi Kantam
DOI:10.1016/j.tet.2014.04.070
日期:2014.9
Synthesis of N-aryl-gamma-amino-gamma-lactams by oxidative coupling of aromatic amines with 2-pyrrolidinone using catalytic amount of CuO nanoparticles is described. The procedure has broad substrate scope, good yields, complete regioselectivity and catalyst recyclability. (C) 2014 Elsevier Ltd. All rights reserved.