| 摘要 |
<p>A process for the preparation of a compound of general formula (I) which comprises reacting a compound of general formula (II) with a carbonyl compound of the general formula (III): RR6CO, wherein Z represents an electron withdrawing group and R6 represents hydrogen, branched or straight-chained, substituted or unsubstituted C1-18 alkyl, substituted or unsubstituted C5-C12 cycloalkyl, aralkyl or alkaryl and R in formulae (I and III) represents hydrogen, substituted or unsubstituted C1-C8 alkyl, lower alkenyl (C1-C8), alk-(C1-C4)aryl, aralkyl(C1-C4) or aryl, or R together with R6 may form a cyclic ring and R5 in formulae (I and II) represents hydrogen, C1-C18 alkyl, cycloalkyl, aralkyl, alkaryl, aryl or a heterocyclic ring such as a furyl ring, said reaction being carried out in the presence of microwave radiation.</p> |
