Dramatic Yield Increase in Cyclizations Leading to Strained Heterocycles of Medium Ring Size By careful choice of the cyclization conditions (solvent, concentration of cesium hydroxide, high dilution) several strained heterocyclic metacyclophanes could be obtained in dramatically increased yields. The favorable effect of cesium hydroxide on the yield was proven.
剧烈产率增加的环化反应导致中环大小的应变杂环。通过仔细选择环化条件(溶剂、
氢氧化铯浓度、高稀释度),可以以显著提高的产率获得几种应变杂环大环烯。
氢氧化铯对产率的有利影响已得到证实。