1: malonic acid dimethyl ester With Mo(CO)3(cycloheptatriene); C26H28N8O2; sodium hydride in tetrahydrofuran; 1,2-dichloro-ethane T=20 - 75°C; 0.5 h; GloveboxInert atmosphere; 2: methyl (3-(thiophen-2-yl)allyl) carbonate in tetrahydrofuran; 1,2-dichloro-ethane T=75°C; 24 h; GloveboxInert atmosphere; Overall yield = 99 percent; enantioselective reaction;