ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Facile and efficient synthesis of xanthenedione derivatives promoted by niobium pentachloride

Willian H. dos Santos and Luiz C. Da Silva-Filho

Department of Chemistry, Faculty of Sciences, São Paulo State University (UNESP), Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Bairro: Vargem Limpa, 17033-360, Bauru, São Paulo, Brazil

E-mail: lcsilva@fc.unesp.br

Abstract: Xanthenedione derivatives were synthesised in one-pot reactions between arylaldehyde derivatives and 1, 3-cyclohexanedione promoted by niobium pentachloride. This new method is simple, cost-effective, high-yielding with a good variety of substrates generality, and can be conducted within reasonable reaction times.

Keywords: niobium pentachloride; Lewis acid; xanthenedione derivatives; one-pot reactions

Full paper is available at www.springerlink.com.

DOI: 10.1515/chempap-2016-0098

Chemical Papers 70 (12) 1658–1664 (2016)