82764-49-6Relevant academic research and scientific papers
Selective Formation of Positional Isomers of Substituted μ3-Benzynes in Triosmium Clusters by degrading Aryldimethylarsines
Arce, Alejandro J.,Deeming, Antony J.
, p. 1155 - 1158 (2007/10/02)
The cluster > in refluxing octane gave the unexpected positional isomer of the methylbenzyne cluster .Similarly the isomeric clusters both gave the 3-methoxybenzyne cluster .A mechanism involving hydrogen-atom transfer between metal and μ3-benzyne with phenyl intermediates is proposed to account for these migration reactions.The complexes (R=4-Me or 3-MeO) exist in solution as rapidly interconverting mixtures of isomers at room temperature which give separate 1H n.m.r. signals at low temperatures.The rapidly interconverting isomers differ in the relative arrangements of the C6H3R and the hydride ligands and not by positional isomerism of the benzyne ligands.
