Synthesis and Conformational Assignment of N-(E)-Stilbenyloxymethylenecarbonyl-Substituted Hydrazones of Acetone and o-(m- and p-) Chloro- (nitro-) benzaldehydes by Means of ¹H and ¹³C NMR Spectroscopy

Table 11

IR (KBr) and ¹H NMR data of compounds 19 and 20.

Compound	IR (cm^−1); 𝛿-CH=CH- trans E	^1H NMR (𝛿, ppm)
		–OCH2–	NH	CH3/CH3	Ar
19	962	5.00; 4.66	10.44; 10.21	1.94; 1.97	6.86–8.32
20	961	5.02; 4.69	10.46; 10.23	1.88; 1.95	6.90–8.23