1: 95 percent / methanol / 1 h / Irradiation 2: 92 percent / borontrifluoride etherate / 3 h / Heating 3: 40 percent / 1,8-diazabicyclo<5.4.0>undec-7-ene / toluene / 4.5 h / Heating 4: 62 percent / hydrogen / 10percent Pd-C / methanol / 12 h View Scheme

1: 95 percent / methanol / 1 h / Irradiation 2: 92 percent / borontrifluoride etherate / 3 h / Heating 3: 40 percent / 1,8-diazabicyclo<5.4.0>undec-7-ene / toluene / 4.5 h / Heating View Scheme

T=200°C; 1 h;   

 in  methanol 1 h;  Irradiation;   

Multi-step reaction with 2 steps 1: 95 percent / methanol / 1 h / Irradiation2: 92 percent / borontrifluoride etherate / 3 h / Heating