preparation of grandisol, fragranol and several related cyclobutanic by-products by procedures employing a [2+2] cycloaddition reaction between an olefine and a ketene-iminium cation generated in situ from an α-chloroenamine. The regio- and stereospecificity of these cyclization reactions are studied.
我们在这里描述了通过在烯烃与从α-
氯亚胺原位生成的烯酮-
亚胺基阳离子之间进行[2 + 2]环加成反应的方法,制备大
丁香酚,
香茅醇和几种相关的
环丁烷副产物。研究了这些环化反应的区域和立体特异性。