Abstract
A chemical method for the preparation of nonprotected tryptophan via nickel(II) complexes under simple operating conditions was established. The carefully designed nickel(II) glycinates are inexpensive and can be quantitatively recovered releasing the target tryptophans in high yield. The method has a wide range of synthesis generality, allowing the preparation of various substituted tryptophans. Furthermore, the scalability of this method bodes well for its synthetic use as a general approach to biologically interesting tailor-made tryptophans and related compounds.
Published Version
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