A novel route to 2,3-pyrazol-1(5H)-ones via palladium-catalyzed carbonylation of 1,2-diaza-1,3-butadienes

被引：63
|
作者：
Boeckman, RK [1 ]
Reed, JE [1 ]
Ge, P [1 ]
机构：
[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA
来源：
ORGANIC LETTERS | 2001年 / 3卷 / 23期
关键词：
D O I：
10.1021/ol016565x
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
[GRAPHICS] A novel Pd(0)-catalyzed carbonylation of both isolable 1,2-diaza-1,3-butadienes and those generated in situ by extrusion of SO2 and CO2 from heterocyclic precursors is described. The reaction proceeds at room temperature to 110 degreesC under 1-2 atm of CO to afford 2,3-pyrazol-1(5H)-ones in good to excellent yields. The effect of catalyst structure and stability on the carbonylation reaction is evaluated.
引用
收藏
页码：3651 / 3653
页数：3
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