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Polystyrene-supported N-sulfonylated amino alcohols and their applications to titanium(IV) complexes catalyzed enantioselective diethylzinc additions to aldehydes

✍ Scribed by Xin-Ping Hui; Chien-An Chen; Kuo-Hui Wu; Han-Mou Gau

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
115 KB
Volume
19
Category
Article
ISSN
0899-0042

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πŸ“œ SIMILAR VOLUMES

Enantioselective addition of diethylzinc
Enantioselective addition of diethylzinc to aldehydes catalyzed by titanium(IV) complexes of n-sulfonylated Ξ²-amino alcohols with four stereogenic centers
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## Abstract An __N__‐sulfonylated β‐amino alcohol (__R__,__S__,__S__,__R__)‐**9** with four stereogenic centers is prepared. The titanium complex of **9** is an effective catalyst to induce excellent enantioselectivities for diethylzinc addition to aromatic aldehydes with ee values up to 99%. The f

Enantioselective Addition of Phenylacety
Enantioselective Addition of Phenylacetylene to Ketones Catalyzed by Titanium(IV) Complexes of N-Sulfonylated Ξ²-Amino Alcohols
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## Abstract The easily prepared and recoverable chiral __N__‐sulfonylated __Ξ²__‐amino alcohol **2** in combination with Ti(OPr‐__i__)~4~was found to be an effective chiral catalyst for the enantioselective addition of alkynylzinc to ketones, which gave the useful products, __i.e.__ chiral tertiary