Straightforward synthesis of substituted dibenzyl derivatives
摘要:
The C-C bond formation by homogeneous catalysis is a powerful tool in organic synthesis. The replacement of noble metal by cheaper one for already reported methodologies is of interest for an economical purpose. The attractivity of such replacement is also enhanced if a first raw transition metal is found to be active in several processes.This work demonstrates that a common nickel complex can be used for a two-step cross-coupling procedure, namely a homocoupling reaction of benzyl derivatives and a subsequent Suzuki reaction. These consecutive reactions permit the synthesis of new polyfunctionalized dibenzyl compounds. (C) 2013 Elsevier Ltd. All rights reserved.
A C<sub>78</sub> Fullerene Precursor: Toward the Direct Synthesis of Higher Fullerenes
作者:Konstantin Yu. Amsharov、Martin Jansen
DOI:10.1021/jo7027008
日期:2008.4.1
A C78fullerene related structure (of C78:1 and C78:4, the last undiscovered C78 IPR isomer) has been synthesized and investigated as a pyrolytic precursor. The pyrolysis of precursor containing all 78 carbon atoms in the required positions and 93 of the 117 C−C bonds, needed for fullereneformation, showed selectivity for C78fullereneformation. In independent experiments it has been shown that the