Abstract
The present research focuses on the impact of power ultrasound on the synthesis of the tungsten-based metathesis catalytic system WCl6/Me4Sn and its activity in ring-opening metathesis polymerization of cyclooctene and cyclododecene. As compared to corresponding silent ROMP reactions with this mild catalytic system, altered reaction kinetics and different product selectivity have been found. Rate acceleration and an enhancement of oligomer formation have been clearly evidenced. The demonstrated possibility of employing technical grade solvents in ROMP induced by WCl6/Me4Sn is a further gain of the ultrasound strategy. Under the right conditions, ultrasound may thus promote greener, more cost effective and sustainable metathetic procedures.
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