Facile and efficient synthesis of xanthene derivatives mediated by lanthanum(III) nitrate hexahydrate under solvent free conditions
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546.72-31:54.06 (1)
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SHAIKH, Kabeer Ahmed, CHAUDHAR, Uddhav Nivrutti. Facile and efficient synthesis of xanthene derivatives mediated by lanthanum(III) nitrate hexahydrate under solvent free conditions. In: Chemistry Journal of Moldova, 2020, nr. 2(15), pp. 99-104. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2020.774
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Chemistry Journal of Moldova
Numărul 2(15) / 2020 / ISSN 1857-1727 /ISSNe 2345-1688

Facile and efficient synthesis of xanthene derivatives mediated by lanthanum(III) nitrate hexahydrate under solvent free conditions

DOI: https://doi.org/10.19261/cjm.2020.774
CZU: 546.72-31:54.06

Pag. 99-104

Shaikh Kabeer Ahmed1, Chaudhar Uddhav Nivrutti2
 
1 Sir Sayyed College of Art’s, Commerce and Science,
2 Kalikadevi Art’s, Commerce and Science College
 
Disponibil în IBN: 30 decembrie 2020


Rezumat

The present paper shows that lanthanum(III) nitrate hexahydrate can be used as mild and environment friendly homogeneous catalyst for an efficient one-pot multi-component synthesis of biologically active 1,8-dioxo-octahydroxanthene and 14H-dibenzo[a,j]xanthene derivatives. The solvent free condensation reaction of aromatic aldehydes and dimedone or β-naphthol was carried out at 70-80ºC during 10-30 min. The obtained compounds were analysed by mass and NMR spectroscopic techniques. The advantages of this eco-friendly synthesis route are numerous, and include the use of an inexpensive catalyst, high to excellent yield, short reaction time and high catalytic activity that can make this method an interesting alternative to multi-step approaches.

Cuvinte-cheie
lanthanum(III) nitrate, xanthene derivative, dimedone, β-naphthol, solvent free condition