Abstract
AbstractThe recently described reaction between lithium hydride and addition products of acyl isothio‐cyanates with amines, methanol, and methanethiol in DMF followed by alkylation with methyl iodide is shown not to generate a new class of heterocycles – 2,2,4‐trisubstituted 2H‐1,3‐oxazetes – but to yield N‐acyl isothioureas, N‐acyl mono‐, and ‐dithioisocarbamates, respectively. The structures are confirmed by IR, mass, 1H‐NMR, and 13C‐NMR spectra.
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