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Asymmetric addition of phenylacetylene to aromatic ketones catalyzed by zinc or titanium complexes with chiral hydroxysulfonamide

✍ Scribed by Yi-Feng Zhou; Zhi-Jian Han; Li Qiu; Jin-Yan Liang; Feng-Bo Ren; Rui Wang


Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
141 KB
Volume
21
Category
Article
ISSN
0899-0042

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πŸ“œ SIMILAR VOLUMES


Asymmetric Addition of Phenylacetylene t
✍ Zhaoqing Xu; Li Lin; Jiangke Xu; Wenjin Yan; Rui Wang πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 134 KB πŸ‘ 1 views

## 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, 20β€…molβ€…% of ligand **8a** catalyzed the r

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