申请人:Tulloch Arran Alexander Dickon
公开号:US20100292449A1
公开(公告)日:2010-11-18
The invention provides a method of carrying out a Lewis-acid catalysed organic reaction in the presence of a Lewis acid catalyst comprising a metal-organic compound having the following formula: M(HO(CR
1
R
2
)z)a(O(CR
1
R
2
)z)bY—(CR
3
R
4
)χ-Y((CR
1
R
2
)zO)c((CR
1
R
2
)zOH)d.nR
5
OH (Formula I) in which: M is a metal atom, preferably titanium, zirconium, hafnium or iron (III) Y is selected from P and N, but Ss very preferably N; each R
1
, R
2
, R
3
and R
4
is independently selected from H, alkyl, aryl, substituted alkyl or substituted aryl, R
5
is hydrogen, an alkyl group, a hydroxy-functionalised alkyl group, a polyoxyalkylmoiety, R
6
O or R
7
COO where R
6
and R
7
may each represent H, alkyl, aryl or alkyl-aryl; d and a are each O or 1, b and c are each 1 or 2, b+c=the valency of M, a+b+c+d=4, each z is independently 1, 2, 3 or 4; x represents the least number of C atoms between the Y atoms and is 2 or 3 and n is a number in the range from 0 to 4. The metal-organic compound forms a stable hydrate in water which retains Lewis-acid catalytic properties.
本发明提供了一种在存在Lewis酸催化剂的情况下进行Lewis酸催化的有机反应的方法,该Lewis酸催化剂包括具有以下公式的金属有机化合物:M(HO(CR1R2)z)a(O(CR1R2)z)bY—(CR3R4)χ-Y((CR1R2)zO)c((CR1R2)zOH)d.nR5OH(公式I),其中:M是金属原子,优选钛、锆、铪或铁(III);Y选自P和N,但非常优选N;每个R1、R2、R3和R4独立地选自H、烷基、芳基、取代烷基或取代芳基;R5是氢、烷基、羟基功能化的烷基、聚氧烷基部分、R6O或R7COO,其中R6和R7各自可以代表H、烷基、芳基或烷基芳基;d和a各自是O或1,b和c各自是1或2,b+c等于M的价,a+b+c+d=4,每个z独立地是1、2、3或4;x代表Y原子之间最少的C原子数,是2或3,n是0到4之间的数。金属有机化合物在水中形成稳定的含水物,保留了Lewis酸催化性质。