C–H functionalization of terminal alkynes towards stereospecific synthesis of (E) or (Z) 2-methylthio-1,4-ene-diones
作者:Shekaraiah Devari、Arvind Kumar、Ramesh Deshidi、Bhahwal Ali Shah
DOI:10.1039/c4cc10438b
日期:——
efficient metal free self-sorting tandem protocol for stereospecificsynthesis of 2-thio-1,4-enediones involving C-C double bond formation via direct coupling of terminal alkynes has been developed. The method was also extended to the first synthesis of beta-thio-gamma-keto-alpha,beta-unsaturated esters via a cross coupling reaction with ethyl glyoxylate. The reaction relies on a first of its kind
Efficient C−C Double-Bond Formation Reaction via a New Synthetic Strategy: A Self-Sorting Tandem Reaction
作者:Guodong Yin、Baohan Zhou、Xianggao Meng、Anxin Wu、Yuanjiang Pan
DOI:10.1021/ol060541e
日期:2006.5.1
[reaction: see text] A novel and efficient carbon-carbon double-bond formationreaction via coupling of aryl or heteroaryl methyl ketones has been developed. A dimethyl sulfoxide-iodine-CuO system was proven to be efficient for this reaction and afforded the expected products in good yields. A new synthetic strategy, a self-sorting tandem reaction, was involved in this type of reaction and was presented
Visible-Light-Driven Z-Selective Reaction of Methyl Ketones with DMSO: A Mild Synthetic Approach to Methylthio-Substituted 1,4-Enedione Promoted by Selectfluor™
作者:Mohit L. Deb、Pranjal K. Baruah、Gaurav K. Rastogi
Iodine-Catalyzed Synthesis of Alkylthio-Substituted 1,4-Enediones from Styrenes and Dialkyl Sulfoxides
作者:Mohit L. Deb、Pranjal K. Baruah、Gaurav K. Rastogi
DOI:10.1055/s-0041-1737494
日期:2022.10
We have developed an efficient iodine-catalyzed route for the synthesis of 2-(alkylthio)-substituted 1,4-enedione derivatives from styrenes under an open air atmosphere. Styrenes are heated with a range of sulfoxides in the presence of iodine and potassium persulfate to afford the desired products in high yields. Except for DMSO, all the sulfoxides are synthesized in the laboratory and are used crude
Diastereoselective sp3-C-H Functionalization of Arylmethyl Ketones and Transformation of <i>E</i>
- to <i>Z</i>
-Products Through Photocatalysis
作者:Gaurav K. Rastogi、Bhaskar Deka、Mohit L. Deb、Pranjal K. Baruah
DOI:10.1002/ejoc.201901415
日期:2020.1.31
route for 1,4‐enedione derivatives under microwave irradiation from the reaction of arylmethylketones with DMSO or diphenyl sulfoxide was developed. E‐isomers of the products can be transformed into Z‐isomers through visible light promoted photocatalysis.