Disclosed is a compound represented by the formula (I):
Wherein R
1
and R
2
independently represent a hydrogen atom, a lower alkyl group or the like; X
1
, X
2
and X
3
independently represent a methine group or a nitrogen atom; Y
1
and Y
3
independently represent a single bond, —O— or the like; Y
2
represents a lower alkylene group or the like; W1 to W4 independently represent a single bond, a methylene group or the like; L represents a single bond, a methylene group or the like; Z
1
and Z
2
independently represent a single bond, a C
1-4
alkylene group or the like; Ar
1
represents an aromatic carbocyclic ring or the like; and Ar
2
represents a bicyclic aromatic carbocyclic ring or the like. The compound is useful as a pharmaceutical for a central disease, a cardiovascular disease or a metabolic disease.
Metal-Containing Ionic Liquids as Efficient Catalysts for Hydroxymethylation in Water
作者:Katharina Bica、Peter Gaertner
DOI:10.1002/ejoc.200800323
日期:2008.7
The iron-containing ionicliquid butylmethylimidazolium tetrachloroferrate (bmim-FeCl4) proved to be an efficient and recyclable catalyst for the hydroxymethylation of β-keto esters using aqueous formaldehyde and a low catalyst loading of up to 0.1 mol-% without co-solvents or additional surfactants. An useful and high-yielding approach to hydroxymethylated keto esters as well as to 3-disubstitued
Disclosed is a compound represented by the formula (I):
Wherein R1 and R2 independently represent a hydrogen atom, a lower alkyl group or the like; X1 , X2 and X3 independently represent a methine group or a nitrogen atom; Y1 and Y3 independently represent a single bond, -O- or the like; Y2 represents a lower alkylene group or the like; W1 to W4 independently represent a single bond, a methylene group or the like; L represents a single bond, a methylene group or the like; Z1 and Z2 independently represent a single bond, a C1-4 alkylene group or the like; Ar1 represents an aromatic carbocyclic ring or the like; and Ar2 represents a bicyclic aromatic carbocyclic ring or the like. The compound is useful as a pharmaceutical for a central disease, a cardiovascular disease or a metabolic disease.