Synthesis Route for 109058-04-0

109057-98-9
1a-methyl-7-meth...
~44%
109058-04-0
3-(2-oxopropylid...

Reference:

Maruyama, Kazuhiro; Osuka, Atsuhiro; Nakagawa, Katsuhiko; Tabuchi, Kenzo; Shimizu, Hirohito; Suzuki, Hitomi Chemistry Letters, 1986 , p. 1849 - 1852