A novel reaction type promoted by aqueous titanium trichloride. Synthesis of unsymmetrical 1,2-diols
作者:Angelo Clerici、Ombretta Porta
DOI:10.1021/jo00136a006
日期:1982.7
CLERICI, A.;PORTA, O., J. ORG. CHEM., 1982, 47, N 15, 2852-2856
作者:CLERICI, A.、PORTA, O.
DOI:——
日期:——
Efficient diastereoselective synthesis of α,β-Dihydroxyesters from methyl phenylglyoxylate and aldehydes mediated by Titanium Trichloride/Pyridine System
作者:Angelo Clerici、Laura Clerici、Luciana Malpezzi、Ombretta Porta
DOI:10.1016/0040-4020(95)00872-6
日期:1995.11
The reductive coupling of methyl phenylglyoxylate 2 with aliphatic and aromatic aldehydes 3, promoted by TiCl3/Py system in anhydrous THF. affords α,β-dihydroxyesters 4 in good yields (60–94%) and high syn-diastereoselectivity (up to 85%) The type of ligand at the metal ion necessary to achieve a high level of diastereocontrol and the possible mechanism involved are discussed