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