Synthesis of a Bench-Stable Manganese(III) Chloride Compound: Coordination Chemistry and Alkene Dichlorination.

The complex [MnCl(OPPh)] () is a bench-stable and easily prepared source of MnCl. It is prepared by treating acetonitrile solvated MnCl () with PhPO and collecting the resulting blue precipitate. is useful in coordination reactions by virtue of the labile PhPO ligands, and this is demonstrated through the synthesis of {Tpm*}MnCl ().

From Resting State to the Steady State: Mechanistic Studies of Ene-Yne Metathesis Promoted by the Hoveyda Complex.

The kinetics of intermolecular ene-yne metathesis (EYM) with the Hoveyda precatalyst (Ru1) has been studied. For 1-hexene metathesis with 2-benzoyloxy-3-butyne, the experimental rate law was determined to be first-order in 1-hexene (0.3-4 M), first-order in initial catalyst concentration, and zero-order for the terminal alkyne.

Ruthenium hydride-promoted dienyl isomerization: access to highly substituted 1,3-dienes.

Ruthenium hydrides were found to promote the positional isomerization of 1,3-dienes into more highly substituted 1,3-dienes in a stereoconvergent manner. The reaction can be conducted in one pot starting with terminal alkynes and alkenes by triggering decomposition of the Grubbs catalyst into a ruthenium hydride, which promotes the dienyl isomerization. The presence of an alcohol additive plays a helpful role in the reaction, significantly increasing the chemical yields.