作者:Eugene E. van Tamelen、Jih Ru Hwu、Thomas M. Leiden
DOI:10.1039/c39830000062
日期:——
In Lewis acid-promoted cyclizations, both the ketoester (1) and its enol acetate (4) generate the cyclopentane (2), while the ketoester (5) under similar conditions does not form the carbobicycle (6) but is converted into the heterocycle (7), via the monocyclic ketoester (8).
在路易斯酸促进的环化反应中,酮酸酯(1)及其烯醇乙酸酯(4)均生成环戊烷(2),而酮酸酯(5)在相似条件下不形成碳环化合物(6),而是转化为杂环(7),经由单环酮酯(8)。