@article { author = {Teimuri-Mofrad, Reza and Boroomand, Negar and Rahimpour, Keshvar and Hadi, Raha and Poursadegh, Ahmad}, title = {Bis-DCM Type Dyes: Convenient Method for Synthesis of 2-(2, 6-bis(4-(dialkylamino)styryl)-4H -pyran-4-ylidene) Malononitrile Derivatives}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {5}, pages = {39-45}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.29775}, abstract = {An efficient and convenient method for synthesis of 2,6-bis (4-(dialkylamino) styryl)-4H-pyran-4-one starting from 4- (dialkylamino) benzaldehyde with 2,6-dimethyl-4H-pyran-4-onein the presence of MeONa as the base was described. Additionally, preparation of novel compounds with bis-DCM-type skeleton for application in organic light-emitting diodes was developed via reaction of malononitrile as active methylene group with 2,6-bis (4-(dialkylamino) styryl) -4H-pyran-4-one derivatives. 1H and 13C NMR, FT-IR spectroscopy supported the predicted structure of the products. The UV-Vis absorption spectra of synthesis compound were measured in diluted dichloromethane solution. Maximum absorption (lmax) values differ from 460 to 496 nm, this absorption is due to π-π* transition.}, keywords = {Knoevenagel condensation,bis-DCM,Malononitrile,2,6-bis(4-(dialkylamino) styryl)-4H-pyran-4-one}, url = {https://ijcce.ac.ir/article_29775.html}, eprint = {https://ijcce.ac.ir/article_29775_1c7b99c9621d82ab0fba0dae4720753d.pdf} }