Before the ortho-metalation, it's a good practice to temporarily protect the carboxylic acid group, usually with a protecting group like a methyl ester. This ensures that the carboxylic acid doesn't interfere with the metalation.
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Benzoic acid, 2-(2-methylpropyl)-
C13H14ClNO3
(+)-(2S,3S)-3-O,N-dibenzylhydroxyl-2-hydroxymethyl-5-oxopyrrolidine
