2007
DOI: 10.1002/chin.200740042
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Karolina Aplander,
Rui Ding,
U. Marcus Lindstroem
et al.

Abstract: Addition reactions O 0060 α-Amino Acid Induced Rate Acceleration in Aqueous Biphasic Lewis Acid Catalyzed Michael Addition Reactions. -The Yb(O-Tf) 3 -catalyzed title Michael addition of various donors to a range of acceptors is significantly accelerated in the presence of D-alanine compared to the analogous reactions in the absence of the amino acid. The enantioselectivities obtained by use of a number of α-amino acids are determined for triketone (Va). In the case of D-alanine, the value of 53% e.e. compare…

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