1: carbon monoxide; dimethyl(2-pyridinyl)(vinyl)silane With tri-ruthenium(0)dodecacarbonyl in toluene T=100°C; Pauson-Khand-type reaction; P=760 Torr; 0.166667 h; 2: 1-(p-CH3O)phenylprop-1-yne in toluene T=100°C; 24 h;

sodium hydroxide in ethanol 6 h; Heating;

1: 84 percent / triethylamine / 3-benzyl-5-(2-hydroxyethyl)-4-methyl-1,3-thiazolium chloride / ethanol / 80 °C 2: 73 percent / 2percent NaOH / ethanol / 6 h / Heating View Scheme