The observed loss of optical activity in the pyrrolones (7), (8), and (10) formed by flash vacuum pyrolysis of the chiral substrates (5), (6), and (9) requires that a discrete intermediate is involved in the hydrogen transfer-cyclisation steps which lead to these products.
通过手性底物(5),(6)和(9)的快速真空热解形成的
吡咯烷酮(7),(8)和(10)中观察到的旋光性损失要求涉及离散的中间体产生这些产物的氢转移环化步骤。