Mild and Diazo-Free Synthesis of Trifluoromethyl-Cyclopropanes Using Sulfonium Ylides
作者:Patrick Cyr、Joël Flynn-Robitaille、Patrick Boissarie、Anne Marinier
DOI:10.1021/acs.orglett.9b00557
日期:2019.4.5
The synthesis of several 1,1-disubstituted trifluoromethyl-cyclopropanes (TFCPs), known as tert-butyl bioisosteres, has been achieved from the reaction between trifluoromethylalkenes and unstabilized sulfonium ylides in yields of ≤97%. This method offers practical access to this cyclopropyl moiety of pharmacological interest, employing a commercially available reagent at low temperatures. The synthesis
由三氟甲基烯烃与不稳定的化之间的反应已实现了数种1,3,1-二取代的三氟甲基-环丙烷(TFCP)的合成,称为叔丁基生物甾醇,收率≤97%。通过在低温下使用可商购的试剂,该方法提供了对具有药理学意义的该环丙基部分的实用途径。还完成了带有其他吸电子基团的环丙烷以及三取代的TFCP的合成。