Reaction of acetylenes with transition metals

M-CPOnes: Transition Metal Complexes with Cyclopropenone-Based Ligands for Light-Triggered Carbon Monoxide Release

“…Further optimisation of this hydrolysis method with HCl enabled the preparative isolation of N-heterocyclic cyclopropenones in good yields (65-91%) with a reaction time of 15 min for 1a and 1b and 1 h for derivative 1c. Evidence for the formation of 1a-c was given by the distinct shift of the carbonyl carbon 39,50,89 around 150-156 ppm in the 13 C NMR spectra (Figures S14, S30 and S46), observation of the molecular ion peak in the ESI mass spectra as well as the characteristic carbonyl stretches and ring vibrations 25,28,39,90 in the ranges of 1835-1850 cm -1 and 1560-1625 cm -1 in the IR spectra (SI Sections 2.1.3, 2.2.3, 2.3.3).…”

M-CPOnes: transition metal complexes with cyclopropenone-based ligands for light-triggered carbon monoxide release

“…Evidence for the formation of 1a-c was given by the distinct shift of the carbonyl carbon 39,50,89 around 150-156 ppm in the 13 C NMR spectra (Fig. S14, S30 and S46 †), observation of the molecular ion peak in the ESI mass spectra as well as the characteristic carbonyl stretches and ring vibrations 25,28,39,90 in the ranges of 1835-1850 cm −1 and 1560-1625 cm −1 in the IR spectra (ESI sections 2.1.3, 2.2.3, 2.3.3 †).…”

Mercury in organic chemistry. 14. A convenient regiospecific synthesis of .pi.-allylpalladium compounds via vinylmercurials

“…Cl Cl/2 H similar fashion diarylacetylenes, alkenes, and dichlorobis-(benzonitrile)palladium(II) react to give -allylpalladium compounds (eq 11). 38 The reaction of vinylsilanes and -ger-2Ar-CseC-C6H6 + 2H2C==CHR + 2CLPd(C6H5CN)2 CsH5 Cl (11) manes and dichlorobis(benzonitrile)palladium(II) also reportedly yields -allylpalladium compounds (eq 12).39 All of R, JA 2 pc=c:…”