1: [(p-cymene)Ru(μ-Cl)3RuCl(3-phenyl-1-indenylidene)(PCy3)] / deuterated toluene / 1 h / 25 °C / Inert atmosphere 2: 60 °C View Scheme

1: hepta-1,6-dien-3-yl 2,2,2-trichloroacetate With copper(l) chloride; Grubb's 2nd generation catalyst in chloroform-d1 T=20°C; 2 h; 2: maleic anhydride in chloroform-d1 Diels-Alder reaction; 3 h; Heating;