作者:Roy Harrison、Bruce Rickborn
DOI:10.1021/ol025760o
日期:2002.5.1
[reaction: see text] The combination of an amine base and Lewis acid (Li+) leads to synergistic catalysis of the Diels-Alder reaction of anthrone with methyl crotonate and some other less reactive dienophiles. These cycloadditions either do not occur with the individual catalysts used separately or they are greatly accelerated by the combined catalysts. DMSO solvent allows the use of LiCl as the Lewis
[反应:见正文]胺碱和路易斯酸(Li +)的组合导致蒽酮与巴豆酸甲酯和其他一些反应性较低的亲二烯体的Diels-Alder反应的协同催化作用。这些环加成要么与单独使用的单独的催化剂一起发生,要么被组合的催化剂大大促进。DMSO溶剂允许使用LiCl作为路易斯酸源,并可以更好地控制后续转化为迈克尔加合物的过程。