Start by treating N-tert-butyl-N-methyl-2-methoxybenzamide with a strong base such as n-butyllithium (n-BuLi) or lithium diisopropylamide (LDA) in an appropriate solvent, typically at low temperatures (e.g., -78°C to -20°C). This will lead to the directed metalation of the aromatic ring at the meta-position to the amide group. The amide acts as a directing group.
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N-ethyl-2,6-difluoroaniline
Mesitylene
2-(Phenylsulfonyl)-1-(trimethylsilyl)benzol
(1R)-bornanediol-(2ξ.5ξ)
