N-Oxides amplify catalyst reactivity and isoselectivity in the ring-opening polymerization of rac-β-butyrolactone
2022
Dong, Xiang | Brown, Alexander M. | Woodside, Audra J. | Robinson, Jerome R.
N-Oxides can amplify the performance of a lanthanum aminobisphenolate catalyst in the ring-opening polymerization (ROP) of rac-β-butyrolactone (rac-BBL) to unprecedented levels (TOF/Pₘ; At RT: 1900 h⁻¹/0.73, At −30 °C: 200 h⁻¹/0.82). Experiments and computations establish donor electronics control catalyst activity, while donor sterics control catalyst deactivation.
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