A phase-separable second-generation hoveyda-grubbs catalyst for ring-opening metathesis polymerization

作者：Al Hashimi Mohammed; Hongfa Chayanant; George Beena; Bazzi Hassan S^*; Bergbreiter David E

来源：Journal of Polymer Science Part A: Polymer Chemistry , 2012, 50(19): 3954-3959.

DOI：10.1002/pola.26206

• metathesis
• phase separation
• polyisobutylene-supported N-heterocyclic carbene
• ROMP
• second-generation Hoveyda-Grubbs catalyst

Polyisobutylene-supported second-generation Hoveyda-Grubbs catalyst is shown to be an effective nonpolar phase tag for ring-opening metathesis polymerization (ROMP). The catalytic activities of the supported Rucarbene complex in ROMP are comparable to those of their homogeneous counterparts. The separability of these catalysts leads to lower Ru contamination (0.5 ppm levels) in the polymer products in comparison to the nonsupported Hoveyda-Grubbs catalyst (10 PPM).

• 出版日期2012-10-1