41427-22-9Relevant academic research and scientific papers
A new and efficient synthesis of ortho- and para-benzoquinones of cardanol derivatives by the catalytic system MeReO3-H2O2
Saladino, Raffaele,Neri, Veronica,Mincione, Enrico,Marini, Stefano,Coletta, Massimiliano,Fiorucci, Chiara,Filippone, Paolino
, p. 581 - 586 (2007/10/03)
A novel and efficient synthesis of ortho- and para-benzoquinones of cardanol derivatives was carried using catalytic system MeReO3-H2O2. The effect of the presence of bromine atoms on the selectivity of the oxidation was also studied. It was observed that the regio-selectivity of the reaction depends on the nature and on the substitution pattern of the substituents.
THE INVENTION OF RADICAL CHAIN REACTIONS. PART XIV. A DECARBOXILATIVE RADICAL ADDITION TO QUINONES
Barton, Derek H. R.,Bridon, Dominique,Zard, Samir Z.
, p. 5307 - 5314 (2007/10/02)
Irradiation of esters 3 derived from aliphatic or alicyclic carboxylic acids and N-hydroxy-2-thiopyridone in the presence of various quinones gives high yields of the corresponding adducts (e.g. 9) with net loss of carbon dioxide.
The Invention of New Radical Chain Reactions. Part 9. Further Radical Chemistry of Thiohydroxamic Esters; Formation of Carbon-Carbon Bonds
Barton, Derek H.R.,Crich, David,Kretzschmar, Gerhard
, p. 39 - 54 (2007/10/02)
Carbon radicals derived from the esters of several types of thiohydroxamic acids have been trapped in a number of different ways.Particular attention has been paid to carbon-carbon bond formation by addition to suitably activated ethylenic linkages.Carboxylic acids can be conveniently converted into homo- and bishomo-acids by free radical chemistry based on thiohydroxamic esters.In a coda the tautomerism of the thiohydroxamic acids have been examined by physical methods.It is confirmed that the esters used are derivatives of the thione tautomer.
FORMATION OF CARBON-CARBON BONDS WITH RADICALS DERIVED FROM THE ESTERS OF THIOHYDROXAMIC ACIDS
Barton, Derek H. R.,Crich, David,Kretzschmar, Gerhard
, p. 1055 - 1058 (2007/10/02)
Radicals formed from the esters of thiohydroxamic acids readily add to electron deficient olefins to give adducts of potential synthetic value in variable yield.In certain cases the added sulphur function is easily eliminated with reformation of olefin.
