Remote Functionalization of C<sub>60</sub> with Enantiomerically Pure <i>cyclo</i>-[2]-Malonate Tethers Bearing C12 and C14 Spacers: Synthetic Access to Bisadducts of C<sub>60</sub> with the Inherently Chiral trans-3 Addition Pattern
作者:Maria Riala、Nikos Chronakis
DOI:10.1021/jo4013173
日期:2013.8.2
cyclo-[2]-malonate tethers that were separated by column chromatography in optically pure form. The bismalonates (−)-4b and (−)-9b proved to be excellent tethers for the regioselective Bingel functionalization of C60, furnishing in a regioselective manner the corresponding f,sC and f,sA trans-3 bisadducts with low diastereoselectivity but in very good to excellent total yields. In both cases, the formed trans-3 bisadducts