The present invention relates to a process for preparing heterocyclic ketones of the formulae (I) and (la), by reacting a heterocyclic compound of the formula (II), with an α,β-unsaturated carboxylic acid of the formula (III), or with its anhydride of the formula (IV), where R
1
is hydrogen or a C
1
-C
40
carbon-containing group, R
2
is hydrogen or a C
1
-C
40
carbon-containing group, or R
1
and R
2
together form a cyclic ring system, R
3
is a C
1
-C
40
carbon-containing group and X is an element of the 16th group of the Periodic Table or is a divalent nitrogen group —(N—R
4
)—, where R
4
is an electron-withdrawing radical which is selected from the group consisting of perhalogenated C
1
-C
40
carbon-containing radicals and C
1
-C
40
organosulfonyl groups.
本发明涉及一种制备式(I)和(la)的杂环酮的方法,该方法通过将式(II)的
杂环化合物与式(III)的α,β-不饱和
羧酸或其式(IV)的酸酐反应而得到,其中R1是氢或含有C1-C40碳的基团,R2是氢或含有C1-C40碳的基团,或者R1和R2一起形成一个环状环系统,R3是含有C1-C40碳的基团,X是周期表第16族元素或是二价氮基团—(N-R4)—,其中R4是从含有卤素的C1-C40碳基团和C1-C40有机磺酰基团组成的电子吸引基团中选择的。