Chemistry of Heterocyclic Compounds, Vol. 39, No. 8, 2003 ... VN Bodnar, VN Britsun, and MO Lozinskii ... It has been established that interacting ethyl 2-arylhydrazono-4-arylthio-3-oxobutyrates with hydrazine, methylhydrazine, and phenylhydrazine forms 4-arylhydrazono-3-arylthiomethyl