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Total synthesis of Estrone:
Reference: Grieco, P. A.; Takigawa, T.; Schillinger, W. J. J. Org. Chem. 1980, 45, 2247. DOI
Keywords: CarboxEster → Alkyl-OH • O-H → O-SO2R • Ketal → Ketone • CarboxEster → Alkyl-OH • Jones oxidation • Alkyl-OH → Ketone • ArylO-Me → ArylO-H • Selenoxide-Ei → Ene • CarboxEster enolate+Alkyl-X • Alkyl-X+Enolate • Baeyer-Villiger • Hydrogenation alkene • Dehydrohalogenation → Ene • Alkyl-X → Alkyl-H • Steroid synthesis • Diels-Alder, Intram, o-Xylylene • Electrocyclic-4π •
Reagents: DBU • LiNiPr2 • AlH4-Li+ • Sulfonyl chloride, methane • BH(Et)3-Li+ • HCl, H2O • H2O2, NaOH • Diazomethane • H2, Pt • AlH4-Li+ • Selenocyanate, o-nitrophenyl • PBu3 • H2O2 • CrO3, H2SO4 (Jones) • B(Br)3 • DMF (solvent) •

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