Organoselenium-Catalyzed Baeyer-Villiger Oxidation of α,β-Unsaturated Ketones by Hydrogen Peroxide to Access Vinyl Esters

2015 ◽  
Vol 357 (5) ◽  
pp. 955-960 ◽  
Author(s):  
Xu Zhang ◽  
Jianqing Ye ◽  
Lei Yu ◽  
Xinkang Shi ◽  
Ming Zhang ◽  
...  
ChemInform ◽  
2015 ◽  
Vol 46 (29) ◽  
pp. no-no
Author(s):  
Xu Zhang ◽  
Jianqing Ye ◽  
Lei Yu ◽  
Xinkang Shi ◽  
Ming Zhang ◽  
...  

1977 ◽  
Vol 55 (5) ◽  
pp. 822-830 ◽  
Author(s):  
Hsing-Jang Liu ◽  
Patrick Chi-Lin Yao

Two general methods for α-carbalkoxymethylation of both enolizable and nonenolizable (towards the γ-position) α,β-unsaturated ketones have been developed. Method A involves three synthetic steps: photocycloaddition of the starting enone to 1,1-dimethoxyethylene, hydrolysis–oxidation of the adduct with acetic acid and 30% hydrogen peroxide, and O-alkylation of the resulting mixture of lactone and acid using anhydrous potassium carbonate and an alkyl iodide, e.g., 13 → 17 → 21 + 22 → 23. Method B differs from method A in the means of securing the required cyclobutanone intermediate. Thus, photocycloaddition of 13 to vinyl acetate followed by hydrolysis of the adduct gave two epimeric keto alcohols 39 whose oxidation with dimethyl sulfoxide and acetic anhydride afforded diketone 40. Baeyer–Villiger oxidation of 40 followed by methylation of the products 21 and 22 completed the overall α-carbomethoxymethylation process to give keto ester 23.


2007 ◽  
Vol 90 (2) ◽  
pp. 309-313 ◽  
Author(s):  
Rafael Llamas ◽  
César Jiménez-Sanchidrián ◽  
José Rafael Ruiz

Tetrahedron ◽  
2006 ◽  
Vol 62 (50) ◽  
pp. 11697-11703 ◽  
Author(s):  
José Rafael Ruiz ◽  
César Jiménez-Sanchidrián ◽  
Rafael Llamas

2019 ◽  
Vol 149 (7) ◽  
pp. 1765-1771 ◽  
Author(s):  
Guansheng Xiao ◽  
Xi Gao ◽  
Weiting Yan ◽  
Tao Wu ◽  
Xinhua Peng

2011 ◽  
Vol 13 (8) ◽  
pp. 2154 ◽  
Author(s):  
Aleksandra J. Kotlewska ◽  
Fred van Rantwijk ◽  
Roger A. Sheldon ◽  
Isabel W. C. E. Arends

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