Sc. Hung et Cc. Liao, DOUBLE MICHAEL ADDITIONS OF LITHIUM ENOLATE OF 1,4-DIOXASPIRO[4.5]DEC-6-EN-8-ONE TO ACRYLATES, Journal of the Chinese Chemical Society, 41(2), 1994, pp. 191-194
Double Michael additions of lithium enolate of 1,4-dioxaspiro[4.5]dec-
6-en-8-one to four acrylates afforded bicyclo[2.2.2]octan-2-ones with
high regio- and stereoselectivities in moderate yields.