Total Syntheses

Reaction scheme for total synthesis of the natural product Allethrolone (Buchi) <b><i><font color=green>New</font></i></b>
Total synthesis of Allethrolone (Buchi) New:
Reference:Büchi, G.; Minster, D.; Young, J. C. F. J. Am. Chem. Soc. 1971, 93, 4319. DOI
Reactions:Li-Dichloromethyl+Ketone • Aldol-Acid → Aldol • Cyclopentenone • EnolEther → Ketone • Epoxidation via halohydrin • Ketal → Vinyl-OR • Ketone → Ketal(Me) • Epoxide → Allyl-OH •
Reagents:Me2C(OMe)2 • TsOH • TsOH • LiCHCl2 • HCl, H2O • Hydroxide, barium •