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A Diarylprolinol in an Asymmetric, Catalytic, and Direct Crossed-Aldol Reaction of Acetaldehyde

✍ Scribed by Yujiro Hayashi; Takahiko Itoh; Seiji Aratake; Hayato Ishikawa

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
278 KB
Volume
47
Category
Article
ISSN
0044-8249

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## Abstract A combination of zinc triflate and chiral __C~2~__‐symmetrical prolinamide ligand leads to high enantioselectivities in direct aldol reactions essentially assisted by water. The presence of 5 mol % of the catalyst affords an asymmetric intermolecular aldol reaction between unmodified ke