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It's as easy as ABC: α-Amino acids may become very important tools in the development of economical and environmentally friendly aqueous biphasic catalysis. Alanine accelerated an Yb(OTf)3-catalyzed Michael addition by a factor of 138. The solubilizing and stabilizing properties of alanine allowed the metal catalyst to be “heterogenized” in the aqueous phase and recycled multiple times without appreciable loss of activity.
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Aplander et al. (2007) studied this question.
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