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Total synthesis of Vitamin A:
Reference: Julia, M.; Arnould, D. Bull. Soc. Chim. Fr.. 1973, 746
Keywords: CarboxEster → CarboxAcid • Li-Sulfone+Alkyl-X • Alkyl-X+Li-R • CompE+-Allyl-Br/CarboxEster+Li-R • Mg-Vinyl+Ketone • Enone+Mg-R • Dehydrosulfonylation → Diene • Allyl-OH → Allyl-Br • Allyl-X → Allyl-SO2R •
Reagents: Vinyl-MgX • PBr3 • LiCHR-Sulfonyl • KOtBu • Allyl-Br • Sulfinate, benzene • Hydroxide, potassium •

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