A ketoester resin was developed as the basis for a selective scavenger for primary amines in the presence of secondary amines. The utility of the scavenger was demonstrated with a range of reductive amination chemistries with both mono-and diamines. The resin's specificity is based on the removal of the primary amines via their enamines.
[Kwon, Min Serk; Kim, Sungjin; Park, Sungho; Bosco, William; Chidrala, Ravi Kumar; Park, Jaiwook Journal of Organic Chemistry, 2009 , vol. 74, # 7 p. 2877 - 2879]
