“…Methacrylonitrile (2a) was collected by reaction distillation in a flask cooled by liquid nitrogen. 43 Method 5: To a round bottom flask containing NaI (3.6 mmol, 1.0 equiv) under nitrogen atmosphere, CH3CN (3 mL), TMSCl (3.6 mmol, 1.0 equiv), H2O (1.8 mmol, 0.5 equiv) and the corresponding alkyne (3.6 mmol, 1.0 equiv) were added. After 30 min, the mixture was transferred to a solution containing CuCN (14 mmol, 4.0 equiv) and N-methyl-2-pyrrolidinone (NMP, 18 mL).…”