(E)-Methyl 3-(2-methyl-1-phenyl-sulfonyl-1H-indol-3-yl)but-2-enoate

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Carboxylic acids react with diazomethane in an ether solvent via alkylation at the carboxylate oxygen atom to give methyl esters of the corresponding acid with excellent yields.
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Phase II Reactions: Methylation Reactions

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