Ferric hydrogensulphate as a recyclable catalyst for the synthesis of fluorescein derivatives

✍ Scribed by Hossein Eshghi; Narges Mirzaie

• Book ID: 111491464
• Publisher: Versita
• Year: 2011
• Tongue: English
• Weight: 198 KB
• Volume: 65
• Category: Article
• ISSN: 0366-6352
• DOI: 10.2478/s11696-011-0024-3

✦ Synopsis

Abstract

Polycondensation reactions of phenols with phthalic anhydride were carried out in the presence of ferric hydrogensulphate under melt conditions. The reactions proceeded in short reaction times by using a catalytic amount of Fe(HSO4)3 and the corresponding fluorescein derivatives were obtained in high yields. The simplicity, scale-up, along with the use of an inexpensive, non-toxic, recyclable catalyst of an environmentally benign nature, are other remarkable features of the procedure. The absorption and emission properties of these fluorescein derivatives were studied.