Synthesis 2021; 53(06): 1095-1102
DOI: 10.1055/s-0040-1707317
paper

Visible-Light-Driven Z-Selective Reaction of Methyl Ketones with DMSO: A Mild Synthetic Approach to Methylthio-Substituted 1,4-Enedione Promoted by Selectfluor™

Gaurav K. Rastogi
a   Department of Applied Sciences, GUIST, Gauhati University, Guwahati-781014, Assam, India   Email: mohitdd.deb@gmail.com   Email: baruah.pranjal@gmail.com
b   A Department of Applied Organic Chemistry, CSIR-NEIST, Jorhat-785006, Assam, India
,
Mohit L. Deb
a   Department of Applied Sciences, GUIST, Gauhati University, Guwahati-781014, Assam, India   Email: mohitdd.deb@gmail.com   Email: baruah.pranjal@gmail.com
,
Pranjal K. Baruah
a   Department of Applied Sciences, GUIST, Gauhati University, Guwahati-781014, Assam, India   Email: mohitdd.deb@gmail.com   Email: baruah.pranjal@gmail.com
› Author Affiliations
M.L.D. is thankful to the Science and Engineering Research Board (SERB), India for the financial support (Grant No. SB/FT/CS-073/2014).


Abstract

Here we disclose a simple, visible-light-driven Z-selective synthesis of methylthio-substituted 1,4-enedione in a single step promoted by Selectfluor. Dimethyl sulfoxide is used as both the ‘thio’ source and the solvent. Molecular iodine and potassium persulfate are used as catalyst and oxidant, respectively. White light (CFL-30W) is used as the light source. The proposed mechanism involves a Kornblum reaction followed by aldol reaction.

Supporting Information



Publication History

Received: 09 August 2020

Accepted after revision: 08 September 2020

Article published online:
12 October 2020

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