Allyl and cinnamyl and propargyl bromide reacted under mild conditions with triarylbismuth under catalysis by Pd(0) to give 3-arylpropenes, 1,3-diarylpropenes a
PEG (Polyethylene glycol average molecular weight 300) is used as absorbent of NO2. The absorption efficiency is found to reach up to 97%. The absorbing produc