Versuche zur Konstitutionsbestimmung bei Enolen

Organic chemistry

“…Catalytic methods of oxidation have not been specially prominent in the aliphatic series of late, but it may be mentioned that Senderens has been engaged on a study of the direct oxidation of alcohols as a necessary preliminary t o the investigation of the effect of metals and metallic oxides in accelerating the change. 45 The results so far obtained have not been specially promising, but there is little reason t o doubt that this revival of an old reaction will ultimately be developed on profitable lines.…”

“…Another method of obtaining indole derivatives is based on the condensation of primary atnd secondary aromatic amines with the esters of mesoxalic acid. 45 The synthesis of indole itself has been accomplished in a somewhat roundabout manner, starting from o-toluidine. 46 The amine is converted into the oxalo-derivative, and then fused with some sub-stances, such as barium hydroxide, which have the property of acting as alkaline condensing agents without producing hydrolysis of the acyl derivatives.…”