Regiospecific Synthesis of Bicyclo- and Heterobicyclo-<i>g</i><i>em</i>-difluorocyclobutenes Using Functionalized Fluoroallenes and a Novel Mo-Catalyzed Intramolecular [2 + 2] Cycloaddition Reaction
作者:Qilong Shen、Gerald B. Hammond
DOI:10.1021/ja0263893
日期:2002.6.1
The first synthesis of functionalized gem-difluoroallenes 4 served as platform for an unprecedented molybdenum-catalyzed intramolecular allene-alkyne [2 + 2]-cycloaddition that produced 6, a hitherto unknown class of bicyclo- and heterobicyclo-CF2-containing cyclobutenes.
第一次合成功能化的嵴二氟丙二烯 4 作为前所未有的钼催化分子内丙二烯-炔 [2 + 2]-环加成的平台,该反应产生了 6,这是迄今为止未知的一类含双环和杂双环-CF2 的环丁烯。