A highly efficient and environmentally more benign synthesis of Fmoc-N-methyl-alpha-amino acids from the corresponding Fmoc-amino acid, via intermediate 5-oxazolidinones, has been developed by using Lewis acid catalysis for the reductive opening of the oxazolidinone ring.
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http://dx.doi.org/10.1021/jo050916u | DOI Listing |
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