ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Efficient one-pot synthesis of 14-aryl-14H-dibenzo [a,j]xanthene derivatives promoted by niobium pentachloride
Aloisio de Andrade Bartolomeu, Manoel Lima de Menezes, and Luiz Carlos da Silva Filho
Department of Chemistry, Faculty of Sciences, Laboratory of Organic Synthesis and Processes (LaOSP), São Paulo State University (UNESP), 17033-360, Bauru, São Paulo, Brazil
Abstract: A simple and efficient procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthene derivatives through one-pot condensation of 2-naphthol with aryl aldehydes in the presence of niobium pentachloride is described. The reactions were carried out using 25 mole % of NbCl5, at ambient temperature, and in acceptable reaction times, affording excellent yields of the products.
Keywords: niobium pentachloride – Lewis acid – one-pot condensation – 14-aryl-14H-dibenzo[a,j]xanthene derivatives
Full paper is available at www.springerlink.com.
Chemical Papers 68 (11) 1593–1600 (2014)
Saturday, October 23, 2021