| Abstract: | The hydrazone 1 reacts with DMFDMA to give 2‐dimethylaminomethylene‐3‐(phenylhydrazono)‐indan‐1‐one (2) which reacts with hydrazine hydrate and the pyrazole derivative 4 to afford the indenopyrazole derivatives 3 and the indenofluorene 5 respectively. The reaction of 2 with the active methylene compounds, mainly malononitrile, cyanoacetamide and malononitrile dimer was investigated and found to proceed successfully to yield the indenopyran 7 , indenpyridine 8b and trinitrile 9 respectively. Compound 2 reacted with lH‐benzimidazole‐2‐acetonitrile 10 to give to the diazaindenofluorene derivative 11 . Also, 2 reacted with ω‐cyano compounds 12a,b to afford the indenopyran 14 . On the other hand the hydrazone 1 was allowed to react with the enaminones 15, 18 and 21 affording the diazabenzoazulene derivatives 17, 20 and the indeno1,2‐b]pyridin 23 , respectively. |
