Organocatalytic Enantioselective Vinylogous Aldol Reaction of Allyl Aryl Ketones to Activated Acyclic Ketones
作者:Zhenzhong Jing、Xiangbin Bai、Wenchao Chen、Gao Zhang、Bo Zhu、Zhiyong Jiang
DOI:10.1021/acs.orglett.5b03412
日期:2016.1.15
vinylogous aldol reaction of activated allyls to activated acyclic ketones is disclosed. A variety of activated acyclic ketones, such as trifluoromethyl ketones, α-ketoesters, and α-keto phosphonates, were found to be involved forming diverse γ-selective aldol adducts with high enantioselectivities (up to >99% ee). The method provides an effective, general strategy to access valuable chiral electron-withdrawing
公开了活化的烯丙基至活化的无环酮的第一催化不对称乙烯基醇醛缩醛反应。发现各种活化的无环酮,例如三氟甲基酮,α-酮酸酯和α-酮膦酸酯,涉及形成具有高对映选择性(高达> 99%ee)的各种γ-选择性醛醇缩合加合物。该方法提供了有效的通用策略,以获取有价值的手性吸电子基团取代的叔羟基基羧酸。