International Journal on Minority and Group Rights. Том 10. 2003. С. 203-220
The reaction of 1-hydrazino-3,3-dimethyl-3,4-dihydroisoquinoline with ethyl aceto-acetate afforded ethyl 3-(3,3-dimethyl-1,2,3,4-tetrahydroisoquinolylidenehydrazono)-2-oxobutanoate. The crystal structure of the title compound was established by X-ray diffraction analysis.