Visible Light-Emitting Diode Light-Driven Aerial Oxidation of Aldehydes under Catalyst and Solvent-Free Conditions

Author:

Banerjee Subhash1ORCID,Patel Ashok Raj1,Patel Geetika1,Das Sajal2,Sharma Bhaskar1

Affiliation:

1. Department of Chemistry, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur- 495009, Chhattisgarh, India

2. Department of Chemistry, University of North Bengal, Raja Rammohunpur, Darjeeling-734013, West Bengal, India

Abstract

Background: Green and sustainable method for the oxidation of aldehydes into acids is now in demand as carboxylic acids are important and versatile intermediates. In this context, visible LED light-promoted aerial oxidation can be efficient and greener protocol. Objective: Herein, we have demonstrated a visible LED light-promoted efficient and greener protocol for the aerial oxidation of aromatic aldehydes into corresponding acids in the absence of any additives, base, catalyst, and oxidant. Methods: The oxidation of aromatic aldehydes was irradiated by an LED light at room temperature under an open atmosphere, monitored by TLC. The rate of oxidation was also monitored using different LED lights by UV-Vis studies. The products were purified by column chromatography using silica gel, and the mixture of ethyl acetate/petroleum ether as an eluting solvent and the pure products were confirmed by their melting point determination and NMR spectroscopic analysis. Results: The aldehydes were successfully converted into corresponding acids with good isolated yields (60-90 %) by this protocol, where blue LED light (l ~ 490 nm) was found to be the best choice. Conclusion: The present protocol of aerial oxidation of aromatic aldehydes into corresponding acids under visible LED light has been carried out in the absence of catalyst, oxidant, base, and any other additives. The higher isolated yields, no byproduct formation, and neat reaction conditions are the major advantages of the protocol.

Funder

CCOST, Raipur

Publisher

Bentham Science Publishers Ltd.

Subject

General Materials Science

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3