The azido group is sensitive towards piperidine. In Fmoc-SPPS, this derivative is best introduced as N-terminus or modified before elongating the peptide. Fmoc-p-azidophenylalanine may be inserted as a precursor of p-aminophenylalanine. Levinson et al. reduced the azido group on-resin with a large excess of tributylphosphine in DMF.
Technical inquiry about: 01-4020251 Fmoc-p-azido-Phe-OH
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