A Concise Synthesis of Sterically Hindered 3-Amino-2-Oxindoles
作者:Stephen J. O’Connor、Zheng Liu
DOI:10.1055/s-2003-42074
日期:——
2-pyridylalanine as the aminoacid starting materials, while 3-pyridylalanine and O-methyltyrosine are less efficiently arylated. Sterically hindered aminoacids such as valine and phenylglycine are for all practical purposes, not substrates for the key nucleophilic substitution reaction. The resulting 3-alkyl-3-amino-2-oxindoles are important intermediates for the preparation of drug-like substances.