Oxidative and Reductive Cross-Coupling Reactions Catalyzed by an Anionic “Ligandless” Palladium Complex
作者:Felix Schroeter、Swantje Lerch、Thomas Strassner
DOI:10.1021/acs.oprd.8b00274
日期:2018.12.21
anionic complex [NBu4][Pd(DMSO)Cl3], which can be synthesized on a gram scale in a single step starting from commercially available starting materials, has been shown to be an active catalyst in the Mizoroki–Heck reaction of aryl halides. We present two new catalytic applications of this complex: the base-free oxidative Heck reaction and the reductive homodimerization of aryl halides. This complex outperformed
Selective Monoarylation of Benzenediols via Dianion Intermediates
作者:Chaoyu Xie、Kevin A. Sullivan、Michael E. Laurila、David N. Mitchell、Y. John Pu
DOI:10.1080/00397910701648769
日期:2007.12.1
Abstract Application of the SNAr reaction on benzenediols with arylfluorides revealed an enhancement in monosubstitution selectivity over bis substitution when excess base was used. This trend was studied using symmetrical and nonsymmetrical benzenediols with various levels of steric hindrance. The effect of various bases was examined. A 100% monoselectivity was achieved in the presence of 2.5 equiv
Functionalized MWCNTs, an efficient reinforcement for the preparation of eugenol based high performance PBz/BMI/CNT nanocomposites exhibiting outstanding thermo-mechanical properties
作者:Thirukumaran Periyasamy、Shakila Parveen Asrafali、Seong-Cheol Kim
DOI:10.1039/c7nj00357a
日期:——
exothermic maxima, corresponding to benzoxazine and allyl group polymerization. Furthermore, by the incorporation of F-MWCNTs into the PBz/BMI system, the properties of the PBz/BMI/F-MWCNT nanocomposites were improved significantly. The enhancement in the material properties is due to the strong interaction between the F-MWCNTs and PBz, resulting in the formation of interpenetrating polymer networks. The
Thermal transition behaviors, solubility, and mechanical properties of wholly aromatic para-, meta-poly(ether-amide)s: effect on numbers of para-aryl ether linkages
作者:Wen-Qiang Zhang、Xiu-Li Wang、Gui-Cheng Liu、Li Chen、Yu-Zhong Wang
DOI:10.1039/c6ra11163g
日期:——
para- and meta-poly(ether-amide)s containing 2, 3, 4 or 5 para-aryl ether linkages show different solubility, thermal transition behavior and mechanical properties.