反应条件
1: in DMF (N,N-dimethyl-formamide); toluene T=10 - 40°C; 2 h; 2: With oxalyl dichloride in DMF (N,N-dimethyl-formamide); toluene T=10 - 18°C; 2 h; 3: With ammonia in DMF (N,N-dimethyl-formamide); toluene T=10 - 18°C; 2 h; Product distribution / selectivity;
