ADMET polymerization of M1 using G2 in the presence of cross-linker (CL)^a.

Run	CLb/mol%	Time/h	M n c	M w/Mnc	Yieldd/%
8	—	12	12 700	1.85	91
21	2.5	12	13 300	2.58	88
22	2.5	18	13 600	2.28	89
23	5.0	12	11 500	3.95	88
24	5.0	18	13 500	3.48	88
25e	5.0	18	13 800	2.80	90
26f	5.0	18	10 200	2.05	81
27f	5.0	24	11 800	2.59	86

^aConditions: monomer M1 (330 mg, 1.0 mmol), ruthenium catalyst (G2) 1.5 mol%, cross-linker (CL), CH₂Cl₂ 0.4 mL (initial monomer concentration 2.50 M), 50 °C. Detailed procedure is shown in the Experimental section.

^bMol% based on monomer M1.

^cGPC data in THF vs. polystyrene standards.

^dIsolated yield by precipitation as the methanol insoluble fraction.

^eRu 2.0 mol%.

^fCross-linker (CL, 5.0 mol%) was added after 30 min.