The position of substituents on the β-lactam ring can significantly impact the rate of the transamidation reaction. Substituents at or near the amide nitrogen may directly affect the reactivity of the nitrogen atom.
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2-Azetidinone, 1-(2-hydroxyethyl)-4-[[(phenylmethoxy)methoxy]methyl]-
t-butyl 3-bromo-4-[[N-t-butoxycarbonyl-N-methoxycarbonyl]amino]methylbenzoate
6,6'-(1,3,4-oxadiazole-2,5-diyl)bis(2-methylphenol)
