Preparation of Chiral α-Substituted Alaninates through an Efficient Diastereoselective Synthesis of Trisubstituted Allylic Alcohols
作者:Balraj Gopula、Way-Zen Lee、Hsyueh-Liang Wu
DOI:10.1002/asia.201200859
日期:2013.1
fail: The highly diastereoselective addition of vinylaluminum reagents, generated in situ from the zirconium‐catalyzed carboalumination of various alkynes and Me3Al, to the easily accessible (2S,5R,6R)‐5,6‐dimethyl‐[1,4]dioxane‐2‐carbaldehyde (1 b) afforded the corresponding trisubstituted allylic alcohols, and a subsequent Overman reaction yielded allylic amines that contain chiral quaternary carbon
三无失败:将各种炔烃和Me 3 Al的锆催化碳铝化原位生成的乙烯基铝试剂高度非对映选择性地添加到易于获得的(2 S,5 R,6 R)‐5,6‐二甲基‐中[1,4]二恶烷-2-甲醛(1 b)提供了相应的三取代的烯丙基醇,随后的Overman反应产生了包含手性季碳立体中心的烯丙基胺。