反应条件
1.1: thionyl chloride; N,N-dimethyl-formamide / toluene / 4 h / 50 °C 2.1: N-ethyl-N,N-diisopropylamine / tetrahydrofuran / 1 h / 0 °C 3.1: acetonitrile / 14 h / 80 °C 4.1: potassium tert-butylate / tetrahydrofuran / 0.67 h / 0 °C / |Schlenk technique; |Inert atmosphere 4.2: 1 h / 20 °C / |Schlenk technique; |Inert atmosphere View Scheme