𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Mechanism of Asymmetric Dialkylzinc Addition to Aldehydes Catalyzed by Titanium(IV) Complexes of N -Sulfonylated β-Amino Alcohols

✍ Scribed by Wu, Kuo-Hui; Gau, Han-Mou

Book ID
126137031
Publisher
American Chemical Society
Year
2004
Tongue
English
Weight
211 KB
Volume
23
Category
Article
ISSN
0276-7333

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Enantioselective Addition of Phenylacety
Enantioselective Addition of Phenylacetylene to Ketones Catalyzed by Titanium(IV) Complexes of N-Sulfonylated β-Amino Alcohols
✍ Shao-Hua Wang; Yong-Qiang Tu; Peng Chen 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 53 KB 👁 2 views

## Abstract The easily prepared and recoverable chiral __N__‐sulfonylated __β__‐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

Asymmetric addition of diethylzinc to be
Asymmetric addition of diethylzinc to benzaldehyde catalyzed by silica-immobilized titanium(IV) complexes of N-sulfonylated amino alcohols
✍ Lu-Ning Huang; Xin-Ping Hui; Peng-Fei Xu 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 208 KB

A chiral (1R,2S)-2-(p-toluenesulfonylamino)-1,3-diphenyl-1-propanol derived catalyst was synthesized and successfully grafted onto amorphous silica gel and mesoporous silica (MCM-41) by a facile approach. This is the first use of silica-immobilized titanium(IV) complexes of N-sulfonylated amino alco

Enantioselective addition of diethylzinc
Enantioselective addition of diethylzinc to aldehydes catalyzed by titanium(IV) complexes of n-sulfonylated β-amino alcohols with four stereogenic centers
✍ Sheng-Hsiang Hsieh; Han-Mou Gau 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 148 KB 👁 2 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