scholarly journals Equilibrium in the Catalytic Condensation of Carboxylic Acids with Methyl Ketones to 1,3-Diketones and the Origin of the Reketonization Effect

ACS Omega ◽  
2019 ◽  
Vol 4 (6) ◽  
pp. 11032-11043 ◽  
Author(s):  
Alexey V. Ignatchenko ◽  
Thomas J. DiProspero ◽  
Heni Patel ◽  
Joseph R. LaPenna
Keyword(s):  
Carboxylic Acids ◽  
Methyl Ketones ◽  
Catalytic Condensation

Iron-Catalyzed Domino Decarboxylation-Oxidation of ,-Unsaturated Carboxylic Acids Enabled Aldehyde C−H Methylation

2021 ◽  
Author(s):  
Pei-Xue Gong ◽  
Fangning Xu ◽  
Lu Cheng ◽  
Xu Gong ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Carboxylic Acids ◽  
Methyl Ketones ◽  
Simple Method ◽  
Unsaturated Carboxylic Acids

A practical and general iron-catalyzed domino decarboxylation-oxidation of ,-unsaturated carboxylic acids enabled aldehyde C−H methylation for the synthesis of methyl ketones has been developed. This mild, operationally simple method uses...

Gaschromatographisch-massenspektrometrische Differenzierung von Erdbeerarten / Gaschromatographical-masspectrometrical Differentiation of Aroma Substances from Strawberries

1973 ◽  
Vol 28 (9-10) ◽  
pp. 488-493 ◽  
Author(s):  
Friedrich Drawert ◽  
Roland Tressl ◽  
Günter Staudt ◽  
Hans Köppler
Keyword(s):  
Distribution Pattern ◽  
Carboxylic Acids ◽  
Internal Standard ◽  
Secondary Alcohols ◽  
Fragaria Vesca ◽  
Methyl Ketones ◽  
Fragaria Chiloensis ◽  
Fragaria Virginiana ◽  
Main Components ◽  
Aroma Components

Abstract Ripe fruits of wild growing varieties of strawberries had been homogenized under inhibition of the enzymes and extracted with the adding of an internal standard. About 40 main components could be identified and quantitatively determined by gaschromatographical-mass-spectrometrical investigations. Methyl ketones and secondary alcohols dominate in Fragaria moschata and Fragaria vesca, whereas especially ethylesters of the carboxylic acids C6 to C12 are formed by Fragaria chiloensis. Fragaria virginiana contains numerous components amongst which are especially the methyl-and ethylesters of the carboxylic acids C6 to C12; besides it contains, as distinctive marks, n-butyl-, n-hexyl, ra-octyl, and n-decylesters of the carboxylic acids C4 to C10 . All varieties exhibit a sorttypical distribution pattern of the aroma components.

A New Synthetic Method for Methyl Ketones from Carboxylic Acids Using Metallic Strontium and Methyl Iodide.

ChemInform ◽  
2007 ◽  
Vol 38 (26) ◽  
Author(s):  
Norikazu Miyoshi ◽  
Tsuyoshi Matsuo ◽  
Masashi Asaoka ◽  
Aki Matsui ◽  
Makoto Wada
Keyword(s):  
Carboxylic Acids ◽  
Methyl Iodide ◽  
Synthetic Method ◽  
Methyl Ketones
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