Zur Synthese von 4-Aryl-5,6-dihydro-benzo[h]chinolinen

A facile and efficient synthesis of bisazine derivatives

“…Isolation of pyran derivatives 15 can take place through treating 1 with ylidenemalononitrile derivatives 13a-c in dioxane/triethylamine. Transformation of pyran 15 to the bispyridine derivatives 16 took place by heating in a mixture of glacial acetic acid/ammonium acetate mixture similar to that reported earlier [14,[19][20][21]. These reaction products 16a-c were established based on IR which reveals the presence of cyano group and amide carbonyl at expected regions.…”

A novel synthesis of benzo[h]quinolines and study of their fluorescence properties

“…The mechanism for the formation of benzo [h]quinolines 4 from compounds 3 is reported in the literature [16]. Isolated yields of benzo [h]quinolines 4 varied widely from 52 to 90 %.…”

Synthesis of heterocyclic compounds by the reactions of exocyclic α,β‐unsaturated ketones

“…2-Arylidene-1-tetralones (2) were allowed to react with methyl cyanoacetate or cyanoacetamide to afford the 4-a r y l -3 -c y a n o -1 , 2 , 5 , 6 -t e t r a h y d r o b e n z o [h] q u i n o l i n -4 -o n e s (5 7) under alkaline reaction conditions (Scheme 21) [121,122].…”