A new procedure for the synthesis of quinone monoketals derived from a variety of diols has been developed involving treatment of the readily available dimethyl ketals with diols and BF3.etherate in DME.
Catalytic Enantioselective Diels−Alder Reactions of 1,4-Quinone Monoketals
作者:Matthias Breuning、E. J. Corey
DOI:10.1021/ol015852y
日期:2001.5.1
Achiral 1,4-quinone monoketals function well as dienophiles in enantioselectiveDiels−Alderreactions catalyzed by a chiral Ti(IV) Lewis acid.
在由手性 Ti(IV) Lewis 酸催化的对映选择性 Diels-Alder 反应中,非手性 1,4-醌单缩酮的作用很好。