Mononuclear heterocyclic rearrangements involving a sulphur atom: conversion of 1,2,4-oxadiazoles into 1,2,4-thiadiazoles

@inproceedings{Ruccia1974MononuclearHR,
  title={Mononuclear heterocyclic rearrangements involving a sulphur atom: conversion of 1,2,4-oxadiazoles into 1,2,4-thiadiazoles},
  author={Michele Ruccia and Nicol{\`o} Vivona and Gabriella Macaluso},
  year={1974}
}
3-Amino-5R-1,2,4-oxadiazoles (IIIa—b) react at 120–130°C with phenyl isothiocyanate to give 3-acyl-amino-5-anilino-1,2,4-thiadiazoles (Va–b) presumably through a thermally induced rearrangement of the intermediates, N-(5R-1,2,4-oxadiazol-3-yl)-N′-phenylthioureas (IVa–b). 

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