TY - JOUR ID - 109429 TI - Application of Chlorophyll Extracted from Spinach as a Green and affordable Catalyst for the Synthesis of Tetrahydrobenzo[b]pyran and Pyrano[c]chromene JO - Organic Chemistry Research JA - ORG.CHEM LA - en SN - AU - Shirzaei, Moheb AU - Mollashahi, Ebrahim AU - Maghsoodlou, Malek Taher AU - Lashkari, Mojtaba AD - Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, P. O. Box98135-674, Zahedan, Iran AD - Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, P. O. Box 98135-674 Zahedan, Iran AD - Faculty of Sciences, Velayat University, Iranshahr, Iran Y1 - 2020 PY - 2020 VL - 6 IS - 2 SP - 179 EP - 187 KW - Chlorophyll KW - Natural catalyst KW - Tetrahydrobenzo[b]pyran KW - 3 KW - 4-Dihydropyrano[c]chromene DO - 10.22036/org.chem.2020.189549.1206 N2 - 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. UR - https://www.orgchemres.org/article_109429.html L1 - https://www.orgchemres.org/article_109429_546b2474dfb7f7c196707b31065caf98.pdf ER -