{"title":"Visible light-induced organophotoredox-catalyzed difunctionalization of alkenes and alkynes","authors":"Subham Gupta, Abhishek Kundu, Sumit Ghosh, Amrita Chakraborty and Alakananda Hajra","doi":"10.1039/D3GC03291D","DOIUrl":null,"url":null,"abstract":"<p >In the era of organic synthesis, the direct difunctionalization strategies of alkenes and alkynes are very eminent, which open up an excellent route to introduce two functional groups simultaneously. At the same time, photocatalysis has become an imperative tool in organic synthesis due to its activation potential along with their environmentally benign nature. Moreover, the employment of photoredox catalysis in the di-functionalization strategy has become a step ahead toward sustainability, specifically when the photoredox catalyst is metal-free. In this review, realizing tremendous important trend, we have specifically tried to assemble several reported difunctionalization strategies of alkynes and alkenes using metal-free dye-based photoredox catalysts. This perspective showed the use of eosin Y, 4CzIPN, Rose Bengal, Mythylene Blue, rhodamine B, Ph-PTZ, <em>etc</em>., as the most used organophotoredox catalysts. Furthermore, a detailed discussion of the mechanistic pathway is given in every scheme to depict a clear perspective of photoredox catalysts.</p>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":" 21","pages":" 8459-8493"},"PeriodicalIF":9.3000,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Green Chemistry","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2023/gc/d3gc03291d","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In the era of organic synthesis, the direct difunctionalization strategies of alkenes and alkynes are very eminent, which open up an excellent route to introduce two functional groups simultaneously. At the same time, photocatalysis has become an imperative tool in organic synthesis due to its activation potential along with their environmentally benign nature. Moreover, the employment of photoredox catalysis in the di-functionalization strategy has become a step ahead toward sustainability, specifically when the photoredox catalyst is metal-free. In this review, realizing tremendous important trend, we have specifically tried to assemble several reported difunctionalization strategies of alkynes and alkenes using metal-free dye-based photoredox catalysts. This perspective showed the use of eosin Y, 4CzIPN, Rose Bengal, Mythylene Blue, rhodamine B, Ph-PTZ, etc., as the most used organophotoredox catalysts. Furthermore, a detailed discussion of the mechanistic pathway is given in every scheme to depict a clear perspective of photoredox catalysts.
期刊介绍:
Green Chemistry is a journal that provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998), which defines green chemistry as the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry aims to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. The journal welcomes submissions on all aspects of research relating to this endeavor and publishes original and significant cutting-edge research that is likely to be of wide general appeal. For a work to be published, it must present a significant advance in green chemistry, including a comparison with existing methods and a demonstration of advantages over those methods.