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Enantioselective Addition of Phenylacetylene to Ketones Catalyzed by Titanium(IV) Complexes of N-Sulfonylated β-Amino Alcohols.

✍ Scribed by Shao-Hua Wang; Yong-Qiang Tu; Peng Chen

Publisher
John Wiley and Sons
Year
2006
Weight
24 KB
Volume
37
Category
Article
ISSN
0931-7597

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## Abstract A series of β‐sulfonamide alcohol ligands were synthesized from L‐phenylalanine. Titanium complexes of these compounds were used to catalyze the asymmetric addition of phenylacetylene to a number of aldehydes. When the conditions were optimized, 20 mol % of ligand **8a** catalyzed the r