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Total synthesis of Bergamotene, β-trans:
Reference: Corey, E. J.; Desai, M. C. Tet. Lett. 1985, 26, 3535
Keywords: CarboxAcid -> CarboxCl • Wolff-Kishner • Ketone -> CH2 • Ketone enolate+CO2 • Wittig-methyl • Ketene Cycloaddition •
Reagents: LiNiPr2 • CO2 • Ph3P=CH2 • Oxalyl chloride • NEtiPr2 • Hydrazine • KOtBu • LiN(SiMe3)2

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