| 摘要 |
<p>A process for the preparation of 5H,9bH-2a,4a,7, 9a-octahydrotetraazacycloocta[cd]pentalene of formula (I) which comprises the reaction of 1,4,7,10-tetraazacyclododecane with triethyl orthoformate in the absence of solvent and in the presence of an acid catalyst.</p> |
