Rapid Fluorescent Screening for Bifunctional Amine-Acid Catalysts: Efficient Syntheses of Quaternary Carbon-Containing Aldols under Organocatalysis
摘要:
Direct catalytic aldol reactions of 伪,伪-dialkylaldehyde donors and arylaldehyde acceptors have been performed using pyrrolidine鈭抋cetic acid bifunctional catalysts. This general and practical amine鈭抋cid combination was identified by screening catalysts using a new fluorescent detection system for carbon鈭抍arbon bond formation. Using 0.05 equiv of pyrrolidine and 0.25 equiv of acetic acid as catalyst, we obtained 伪,伪-dialkylaldol product in 96% yield after 2 h at ambient temperature. Proline was a poor catalyst of this reaction.
展开
DOI:
10.1021/ol035651p
被引量:
年份:
2003
相似文献
参考文献
引证文献
辅助模式
引用
文献可以批量引用啦~
欢迎点我试用!