Ruthenium(II) and -(III) complexes have been found to be very efficient catalysts for the metathesis of vinylphenyl-substituted silanes to yield the corresponding (E) + (Z)-1,2-bis(silyl)ethenes with a yield above 75%. Rhodium(I) complexes are less effective.
Synthesis of Unsaturated Starburst Compounds with a Boron Atom in the Core
作者:Jędrzej Walkowiak、Bogdan Marciniec
DOI:10.1021/om201098w
日期:2012.5.28
A highly effective method for regio- and stereoselective synthesis of unsaturated starburst compounds with a boron atom core and a trans configuration of all double bonds via silylative coupling of selected olefins (styrenes, vinylboronates, and vinylsilanes) with boron tris-(dimethylvinylsiloxide) catalyzed by [Ru(CO)ClH(PCy3)(2)] is described. All products could be potential precursors for new highly branched materials with unique mechanical, thermal, and optoelectronic properties.