作者:Jean Ollivier、Jean-Marc Garnier、Frédéric Lecornué、Florence Charnay-Pouget
DOI:10.1055/s-2007-991092
日期:——
Simple cyclopropanols are obtained on addition of ethylmagnesium halides to esters in the presence of titanium isopropoxide. Alternatively, we have found that they may also be prepared in moderate to good yields through unexpected vinyl transfer from vinyl ethers via a titanium-promoted inter- or intramolecular reaction. On the basis of deuterium labeling experiments, a mechanism has been proposed.
在
异丙醇钛的存在下,将乙基卤化
镁加到酯中可以得到简单的
环丙醇。另外,我们还发现,通过
钛促进的分子间或分子内反应,从
乙烯基醚中进行意想不到的
乙烯基转移,也可以制备出中等至高产率的
环丙醇。根据
氘标记实验,我们提出了一种机制。