Iron powder reduction 3

This amino acid compound is extremely polar and water solubility is very good. It is better to directly CBZ directly. After purification

It is difficult, after all, the amino acid is an inner salt, which can dissolve its solvent to dissolve ammonium chloride and iron powder..It is recommended that carboxyl is protected first, or if you replace the reduction method, such as hydrogenation, clean, perhaps, you can get a recrystallization

The amino acid should be adjusted to a suitable pH to extract