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

被引：64

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

页码：3651 / 3653

页数：3

共 17 条

[1]

ARCADI A, 1994, SYNTHESIS-STUTTGART, P605

[2]

Arcadi A, 1996, SYNTHESIS-STUTTGART, P533

[3] New heterocyclic precursors for thermal generation of reactive, electron-rich 1,2-diaza-1 3-butadienes [J].