Milenna M. Sena, Carlos Kleber Z. Andrade, Rafael O. Rocha, Ugi Reaction of Natural Amino Acids Promoted by NbCl5, Blucher Chemistry Proceedings, Volume 1, 2013, Pages 367-367, ISSN 23184043, http://dx.doi.org/10.5151/chempro-14bmos-R0367-1 (www.proceedings.blucher.com.br/article-details/ugi-reaction-of-natural-amino-acids-promoted-by-nbcl5-8178) Palavras-chave:: ;