Please use this identifier to cite or link to this item:
http://hdl.handle.net/2080/3976
Title: | Transition Metal and External Oxidant Free Visible Light Assisted Dearomatization of Biaryl Yones: Synthesis of Thiocyanated Spiro [5.5] Trienones |
Authors: | Samanta, Shantanu Sarkar, Debayan |
Keywords: | Photoredox Catalysis Dearomatization Thiocyanation Biaryl Ynones |
Issue Date: | Feb-2023 |
Publisher: | International Conference on "Sustainable chemistry-2023, IIT Indore, India, 20-26 February 2023 |
Abstract: | A photoredox catalyzed efficient protocol for the direct insertion of -SCN group onto spiro[5.5]trienone via dearomative cascade cyclization of biaryl ynone with inexpensive NH4SCN has been developed employing 4CzIPN as a potent photocatalyst under blue light irradiation without external oxidant. This scalable 6-exo-trig cyclization led to the cascade formation of C-C and C-S bonds and incorporate diverse thiocyanated spiro compounds with excellent yield (up to 92%). Additionally, mechanistic investigation elaborated with fluorescence quenching, cyclic voltammetry, and radical scavenging study. Gram scale synthesis and further functionalization of thiocyanated compound highlighted the potential utility of this methodology. |
Description: | Copyright belongs to proceeding publisher |
URI: | http://hdl.handle.net/2080/3976 |
Appears in Collections: | Conference Papers |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2023_ICSC_SSamanta_Transition.pdf | Poster | 966.85 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.