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Kasheres, C., Negri, G., Ferreira, M. M. C., Sabino, L. C. “Principal Component Analysis on the effect of nucleophiles on the reactivity of a-acylenaminoketones”. J. Chem. Soc.-Perkin Trans. 2, (12), 2237-2243 (Dec 2001).
[Article.]
 

This article is cited and partially represented in review
C. M. Kascheres, “The Chemistry of Enaminones, Diazocarbonyls and Small Rings: Our Contribution”. J. Braz. Chem. Soc., 14 (2003) 945-969.

at page 956 as reference No. 51. One can view the relevant part of this paper here, or download the whole paper at:
http://jbcs.sbq.org.br/jbcs/2003/v14_n6/11-284-02.pdf