| 摘要 |
<p>A process is provided for preparing a compound of the following general formula (I) wherein R1 represents hydrogen, an alkyl group of 1 to 12 carbon atoms, an aryl group of 6 to 12 carbon atoms or an aralkyl group of 7 to 12 carbon atoms, X1 represents a halogen atom, R3, R4 and R5 each independently represents hydrogen, an alkyl group of 1 to 12 carbon atoms, an aryl group of 6 to 12 carbon atoms or an aralkyl group of 7 to 12 carbon atoms, and R4 and R5 may be conjoined to each other to form a ring, which comprises reacting a compound of the following general formula (II) with a carboxylate source in the presence of an ionic liquid of the general formula (III)</p> |
