1980
DOI: 10.1002/hlca.19800630419
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Zur Kinetik des Ringschlusses von 2‐Hydroxybenzaniliden zu Benzoxazolen

Abstract: SummaryThe reaction rates of cyclization of 2-hydroxybenzanilides to benzoxazoles have been measured in N-methyl-2-pyrrolidone at different temperatures. The reactions follow second-order kinetics.In einer friiheren Arbeit [ 11 wurde iiber die Herstellung von Benzoxazolderivaten in N-Methyl-2-pyrrolidon (NMP) als Losungsmittel berichtet und darauf hingewiesen, dass das bei der Kondensation der o-Aminophenole mit Carbonsaurechloriden in Gegenwart von NMP entstandene N-Methyl-2-pyrrolidiniumchlorid (2) den Rings… Show more

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1980
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