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Enantioselective alkynylation of aldehydes catalyzed by a camphor sulfonylated amino alcohols titanium(IV) catalyst system

✍ Scribed by Shaohua Gou; Zhongbin Ye; Zhiyu Huang; Xiping Ma


Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
142 KB
Volume
24
Category
Article
ISSN
0268-2605

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πŸ“œ SIMILAR VOLUMES


ChemInform Abstract: Enantioselective Al
✍ Shaohua Gou; Zhongbin Ye; Zhiyu Huang; Xiping Ma πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 21 KB

## Abstract The complex generated in situ from optically active sulfonamide BCS and Ti(O‐iPr)~4~ is employed under optimized conditions for the synthesis of enantioenriched propargylic alcohols (up to 65% e.e.).

Enantioselective Addition of Phenylacety
✍ Shao-Hua Wang; Yong-Qiang Tu; Peng Chen πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 53 KB πŸ‘ 1 views

## 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

Enantioselective addition of diethylzinc
✍ Sheng-Hsiang Hsieh; Han-Mou Gau πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 148 KB πŸ‘ 1 views

## 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