Transition-Metal-Free Synthesis of Quinoxalines from o-Phenylenediamines and Arylacetaldehydes under Basic Conditions
摘要:
A novel method for the synthesis of quinoxalines via transition-metal-free cyclization of o-phenylenediamine and arylacetaldehyde in a one-pot procedure has been developed. In this process, an inorganic base (K2CO3) is the only reagent required, and it proceeds smoothly in the absence of adding transition metal catalysts. The reaction appears to be very general and suitable for the construction of a variety of quinoxalines.
A catalyst free, one pot approach for the synthesis of quinoxaline derivatives via oxidative cyclisation of 1,2-diamines and phenacyl bromides
作者:Kapil Kumar、Sagar Ravso Mudshinge、Sandeep Goyal、Mukesh Gangar、Vipin A. Nair
DOI:10.1016/j.tetlet.2015.01.138
日期:2015.3
A simple, efficient and eco-friendly method has been developed for quinoxaline synthesis from inexpensive and readily available diamines and phenacyl bromides by catalyst- and additive-free protocol.