N-bromosuccinmide; 1,5-diazabicyclo[5.4.0]undeca-5-ene 1.) CCl4, reflux, 1 h, sunlamp; 2.) CH2Cl2, 25 deg C, 0.5 h; Multistep reaction. Title compound not separated from byproducts;

1: 1.) NBS; 2.) 1,5-Diazabicyclo<5.4.0>undec-5-ene / 1.) CCl4, reflux, 1 h, sunlamp; 2.) CH2Cl2, 25 deg C, 0.5 h 2: pyridine / 0.17 h / Heating View Scheme