Initiators, dibenzoylmethane

This above solution was directly added to an autoclave containing dibenzoylmethane (2.24 g, 10 mmol). The hydrogenation was performed at 50 bar initial H2 pressure. 

The role of Acac" in the polymerization reaction has been clarified by ESR spectroscopy [8]. It was demonstrated that the initial Acac" radical formed is consumed in the course of the polymerization reaction and substituted by another, C-centered radical attributed to the growing polyacrylamide chain. Using Acac or dibenzoylmethane as initiators, NMR studies revealed the presence of the initiator in the polymer product [12]. 

---