Enantioselective addition of diethylzinc to aromatic aldehydes catalyzed by titanium-5,5′,6,6′,7,7′,8,8′-octahydro-1,1′-bi-2-naphthol complex
作者:Fu-Yao Zhang、Albert S.C. Chan
DOI:10.1016/s0957-4166(97)00501-6
日期:1997.11
The use of Ti(H8-BINOL) (H8-BINOL=5,5′,6,6′,7,7′,8,8′-octahydro-1,1′-bi-2-naphthol) as a catalyst for the diethylzinc addition to aldehydes has been studied, and high e.e.s (up to 98.5%) were obtained for the chiral alcohol products. The results were significantly better than those obtained with the corresponding Ti(BINOL) catalyst (BINOL=1,1′-bi-2-naphthol).
Ti(H 8 -BINOL)(H 8 -BINOL = 5,5',6,6',7,7',8,8'-八氢-1,1'-bi-2-萘酚)的用途已经研究了用于将二乙基锌加成醛的催化剂,并且对于手性醇产物获得了高ee(高达98.5%)。结果明显好于用相应的Ti(BINOL)催化剂(BINOL = 1,1'-bi-2-萘酚)获得的结果。