monoadduct was obtained in lower yields in the ATRA of less active halogenated compounds, which was mostly due to incomplete alkene conversions. Ambient temperature ATRA of CCl4 to various 1,6-dienes followed by sequential ATRC was also performed in the presence of UV light using [CuII(TPMA)Cl][Cl] complex and AIBN. High yields of the 5-exo-trig cyclic product were obtained for all dienes with preferential
据报道,在AIBN存在下,紫外线在
铜催化的原子转移自由基加成(A
TRA)和各种(多)卤代化合物与高活性烯烃的环化(ATRC)反应中的使用。由AIBN的光分解产生的自由基可在环境温度下有效地再生
铜(I)配合物,从而实现A
TRA的A
TRA四氯化碳4催化剂负载量低至0.05 mol%的CBr 4和CBr 4。活性较低的卤代化合物在A
TRA中以较低的收率获得了所需的单加合物,这主要是由于烯烃转化不完全所致。的环境温度A
TRA四氯化碳4使用[Cu II(T
PMA)Cl] [Cl]配合物和AIBN ,在紫外光存在下,先后制得各种1,6-二烯,然后依次进行ATRC 。对于所有二烯,以顺式异构体的优先形成,获得了高产率的5- exo - trig环状产物。