| 摘要 |
<p>Process comprises reaction of maleamic acid (I) with a furan of formula (II), in which R is H or methyl. The reaction, in polar solvents e.g. (m)ethanol, takes place at 0-50 deg.C. - The solvent is sepd. from the reaction mixt., for filtering off of the prod. of formula (III).</p> |
