SAMENVATTINGEen nieuwe methode voor de bereiding van 4,5-gesubstitueerde n4-oxazoline-2-thionen wordt beschreven. Uitgaande van benzolnen of acyloinen en thiocyaanzuur (of de zouten hiervan en een zuur) worden met goedeopbrengsten 4-oxazoline-2-thionen bekomen. In sommige gevallen vornien zich de isomere ~4-thiazolin-2-onen als nevenprodukten. Enkele gegevens over r. R. spectra en vormingsmechanisme worden eveneens vermeld.
A new sulphonation method is described according to which alkylhydroquinones can be converted into the corresponding alkylhydroquinone sulphonic acids. The method consists in allowing to react at room temperature sulphur trioxide with the alkylhydroquinone dissolved in dichloroethane. (I. W.O.N.L.).
A method has been developed for the preparation of 5-substituted 1.2.4-triazoline-3-thiones and of alkylene and arylene 5.5'-bis-1.2.4-triazoline-3-thiones starting from carboxylic acid esters or dicarboxylic acid esters and thiosemicarbazide in sodium alcoholate medium.
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