Novel and Highly Efficient Synthesis of Substituted Dibenz[b,g]1,5-oxazocines. A Direct Comparison of the Solution versus Solid-Phase Approach
作者:Xiaohu Ouyang、Zhidong Chen、Longbin Liu、Celia Dominguez、Alexander S. Kiselyov
DOI:10.1016/s0040-4020(00)00120-4
日期:2000.4
We describe a novel and highly efficient synthesis of substituted dibenz[b,g]1,5-oxazocines. The procedure is based on the SNAr of fluoride with the phenolic hydroxide of the properly assembled acyclic intermediate. A direct comparison of the solution-phase vs the solid-phase synthesis has been conducted. The speed of the synthesis, the purity of the desired eight-membered heterocycles (>95%), as well
我们描述了一种新型的和高效的取代苯并[ b,g ] 1,5-恶唑啉合成。该程序基于氟化物的S N Ar与正确组装的无环中间体的酚式氢氧化物。进行了固相合成和固相合成的直接比较。合成速度,所需八元杂环的纯度(> 95%)以及所得文库的多样性是固相方法的绝对优势。通过固相方法合成的二苯并[ b,g ] 1,5-恶唑啉的产率通常更好,而通过两种方法合成的产物的纯度相同。