Rhodium-catalyzed Highly Enantioselective [4+2] Annulation of 2-Alkynylbenzaldehydes with Acyl Phosphonates

被引：8
|
作者：
Tanaka, Ken [1 ]
Tanaka, Rie [1 ]
Nishida, Goushi [1 ]
Noguchi, Keiichi [2 ]
Hirano, Masao [1 ]
机构：
[1] Tokyo Univ Agr & Technol, Grad Sch Engn, Dept Appl Chem, Koganei, Tokyo 1848588, Japan
[2] Tokyo Univ Agr & Technol, Instrumentat Anal Ctr, Koganei, Tokyo 1848588, Japan
来源：
CHEMISTRY LETTERS | 2008年 / 37卷 / 09期
关键词：
D O I：
10.1246/cl.2008.934
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A cationic rhodium(I)/(R)-Segphos (R) [(4A'-bi-1,3-benzo-dioxole)-5,5'-diylbis(diphenylphosphine)] complex catalyzes the highly enantioselective [4+2] annulation of 2-alkynyl-benzaldehydes with acyl phosphonates, leading to benzopyranones with a phosphonate-substituted quaternary carbon center in moderate to high yields with excellent ee's.
引用
收藏
页码：934 / 935
页数：2
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