Copper-mediated rapid and facile oxidative dehydrogenation of dihydrobenzocarbazoles
摘要:
Rapid method for the oxidative dehydrogenation of dihydrobenzocarbazoles has been introduced by using bench scale and commercially available reagent; copper chloride, in excellent yield with easy workup. The scope of the reaction has been studied with broad range of substitutes
A one-pot direct regioselective iodination of Fischer-Borsche product using periodic acid in PEG-400
作者:Monica H. Ghom、Mahavir S. Naykode、Vivek T. Humne、Pradeep D. Lokhande
DOI:10.1016/j.tetlet.2019.03.022
日期:2019.4
A metal-free and greener approach for the one-pot direct iodination and dehydrogenation of dihydrobenzo[a]carbazoles has been developed using periodic acid in polyethylene glycol-400 (PEG-400) under mild condition. This method has been proven to be tolerate to a broad range of functional groups, with good to excellent yields include metal-free inexpensive catalyst, easy work-up, benign reaction condition and high regioselectivity. The solvent has been successfully recycled up to 5 times without any loss of activity in an aqueous medium. (C) 2019 Elsevier Ltd. All rights reserved.