Platinum/Scandium-Cocatalyzed Cascade Cyclization and Ring-Opening Reaction of Tertiary Amines with Substituted Salicylaldehydes to Synthesize 3-(Aminoalkyl)coumarins
作者:Xiao-Feng Xia、Xing-Zhong Shu、Ke-Gong Ji、Ali Shaukat、Xue-Yuan Liu、Yong-Min Liang
DOI:10.1021/jo102219z
日期:2011.1.7
oxidative dehydrogenation of α,β-C(sp3)−H bonds of tertiary amines in the presence of ambient oxygen followed by reactions with substituted salicylaldehydes is revealed. The in situ formed enamines reacted with various salicylaldehydes, which resulted in the development of a one-pot synthetic protocol involving aldol reaction, cyclization, and then ring-opening.
揭示了3-(氨基烷基)香豆素的合成,其在环境氧存在下由叔胺的α,β-C(sp 3)-H键经铂/ scan共催化氧化脱氢,然后与取代的水杨醛反应。原位形成的烯胺与各种水杨醛反应,从而导致了涉及一羟醛反应,环化和开环的一锅合成方案的发展。