@article { author = {Shirzaei, Moheb and Mollashahi, Ebrahim and Maghsoodlou, Malek Taher and Lashkari, Mojtaba}, title = {Application of Chlorophyll Extracted from Spinach as a Green and affordable Catalyst for the Synthesis of Tetrahydrobenzo[b]pyran and Pyrano[c]chromene}, journal = {Organic Chemistry Research}, volume = {6}, number = {2}, pages = {179-187}, year = {2020}, publisher = {Iranian Chemical Society}, issn = {2383-242X}, eissn = {2383-242X}, doi = {10.22036/org.chem.2020.189549.1206}, abstract = {Chlorophyll is a natural pigment used for the synthesis of organic substances for instance sugars. At mild conditions, chlorophyll was employed as a green catalyst for the synthesis of tetrahydrobenzo[b]pyran and 3,4-dihydropyrano[c]chromene from the condensation between aromatic aldehydes, malononitrile, and 4-hydroxy-2H-chromen-2-one is an active enolic compound. This methodology has a considerable number of advantages such as mild conditions, natural, affordable catalyst, excellent yields, eco-friendly and, short reaction time. Another point worth mentioning is that purification of the products does not require sophisticated methods like column chromatography.}, keywords = {Chlorophyll,Natural catalyst,Tetrahydrobenzo[b]pyran,3,4-Dihydropyrano[c]chromene}, url = {https://www.orgchemres.org/article_109429.html}, eprint = {https://www.orgchemres.org/article_109429_546b2474dfb7f7c196707b31065caf98.pdf} }