Propagation NC Cl-S--CI NC CI+ SO2CI SO,+hcl+ SO2Cl+ CH2Cl SO2Cl2 SO2Cl CH CH3 1-c1 Brommalonsaurediethy lester aus Malonsaurediethylester CO2Et CO2Et Br. Br—CH CO2Et CO,Et Start Br—Br + 2Br Propagation CO2Et CO2Et Br·+ HBI CO,Et CO2Et CO2Et CO2Et Br—CHPropagation: NC NC Cl SO2Cl H SO2 + HCl + SO2Cl2 CH2Cl CH CH3 Cl SO2Cl SO2Cl O S Cl O Cl 1-C1 Brommalonsäurediethylester aus Malonsäurediethylester H2C CO2Et CO2Et CH CO2Et CO2Et Br CCl4 , ∆/hν Br2 Br Br 2Br hν Br CH CO2Et CO2Et Start Propagation H HBr HC CO2Et CO2Et HC CO2Et CO2Et Br Br CH CO2Et CO2Et Br Br