作者:Deshwal, Shalu、Gopalakrishnan, Dinesh Kumar、Purohit, Alok、Karmakar, Tarak、Vaitla, Janakiram
DOI:10.1039/d4ob00677a
日期:——
stereoselective cyclopropanation of vinyl sulfoxonium ylides with indane 1,3-dione and aldehydes under mild reaction conditions. In contrast to previous reports, the present work shows that electrophilic addition selectively takes place at the α-position of the vinyl sulfoxonium ylide. The interesting feature of this approach is that the multicomponent reaction selectively proceeds because of the difference
在此,我们报道了乙烯基亚鎓叶立德与茚满1,3-二酮和醛在温和反应条件下的三组分立体选择性环丙烷化反应。与之前的报道相反,本研究表明亲电加成选择性地发生在乙烯基亚鎓叶立德的α位。该方法的有趣特征是,由于乙烯基亚锍叶立德和茚满1,3-二酮与亲电伙伴(例如醛和原位生成的亚芳基)的亲核反应性不同,多组分反应选择性地进行。此外,还进行了密度泛函理论(DFT)研究,以研究这些反应物反应性的差异,并揭示这种三组分反应的机理。此外,决定选择性的过渡态的非共价相互作用解释了环丙烷化非对映选择性的起源。