| 摘要 |
<p>The lactams of common formula (I), wherein n represents 1 or 2, are prepared by cycloaddition of 1,3-dienes of common formula (II), wherein n represents the already stated function, with cyanogen chloride in the presence of water and sulphinic acid of common formula R-SO2H, wherein R represents the alkyl group with from 1 to 6 of carbon atoms or a substituted phenyl group and/or its salts and consequent hydrolysis.</p> |
