高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 438.
• Synthetic Sciences • 上一篇 下一篇
FENG Xiao-Ming1, WANG Bin2, CUI Xin2, LIU Hui2, JIANG Yao-Zhong2
FENG Xiao-Ming1, WANG Bin2, CUI Xin2, LIU Hui2, JIANG Yao-Zhong2
摘要:
The formal hetero-Diels-Alder reaction between 1-methoxy-3-(trimethyl-silyl)oxy-1,3-butadiene and aldehydes provides useful access to dihydropyrones, a class of compounds with extensive utility in organic synthesis. Asymmetric catalysis of this reaction has been previously reported by a number of investigators. Herein we wish to describe that chiral 5,5',6,6',7,7',8,8'-octahydro-1, 1'-bi-2-naphthol (H8-BINOL)/Ti(O-i-Pr)4 complexes are more effective catalysts than BINOL/Ti(O-i-Pr)4 and others for the asymmetric hetero-Diels-Alder reactions.
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