I am preparing L-Methyl 2-(3,5-dinitrobenzamido)-3-phenylpropanoate. I checked the CD spectra of L- phenyl alanine methyl ester and L-Methyl 2-(3,5-dinitrobenzamido)-3-phenylpropanoate. The amino acid ester shows a peak at 218 nm in ethanol, but no peak for the later product.
Dear Narmadha Manoranjan, the synthesis of the chiral diamine L-methyl 2-(3,5-diaminobenzamido)-3-phenylpropanoate is described in the following article. The paper is available on RG.
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Yes Frank T. Edelmann I followed this paper. But the product shows inverted peak with red shift in the CD spectra. IR and NMR are perfect.
Dear Narmadha Manoranjan, apparently the original paper provides no further information about the CD spectra.
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