Synthesis of 4-Hydroxy-4H-chromenes by Reaction of Salicylic Aldehydes with Alkynals Catalyzed by Silyl Prolinol Ethers
化学
硅烷化
硅醚
对映体
催化作用
串联
有机化学
药物化学
复合材料
材料科学
作者
José Alemán,José García Ruano,Cuauhtémoc Alvarado,Vanesa Marcos,Alberto Núñez
出处
期刊:Synthesis [Thieme Medical Publishers (Germany)] 日期:2011-04-28卷期号:2011 (12): 1840-1846被引量:28
标识
DOI:10.1055/s-0030-1260020
摘要
We report an oxa-Michael/Baylis-Hillman tandem reaction between salicylaldehydes and alk-2-ynals activated by silyl prolinol ethers, affording 2,3-disubstituted 4-hydroxy-4H-chromenes in good yields and enantiomeric ratios (up to 98:2).