Molecules · 2000 · 28 citations · 6 references
Natural SciencesBiochemistryChemistryIndustrial ChemistryHeterocyclic ChemistryAza-claisen Rearrangement
Thermolysis of semicarbazones (I) to azines (II) occurs through reactive N-substituted isocyanate intermediates (Ia) which can be converted in situ to carbamates and Nsubstituted ureas.
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Louis B. Howard, Guido E. Hilbert, R. Wiebe et al. · Journal of the American Chemical Society · 1932 · 18 citations