Table 2.

Ring-opening polymerization of rac-lactide at 120 °C in bulk using DMAP as a catalyst and various cyclodextrin-based initiators (DMAP/ROH = 2).

Entry	Init. 1	M/ROH	Time (min)	Conv. 2 (%)	DP/OH 3 Calc.	DP/OH 4 Final	Init Eff. 5 %	DM 6
1 7	DIC	30	60	4	-	-	-
2	DIC	10	30	94	9.4	14	67	1.10
3 8	β-CD	10	30	97	9.7	10	97	1.09
4	DIC	2	10	83	1.65	2.7	61	1.13
5	DIC	20	60	96	19.2	24.1	80	1.14
6	AIC	2	10	47	0.95	1.2	79	1.14
7	α-CD	10	10	97	9.6	11.2	86	1.07
8	α-CD	30	20	99	19.8	20.3	98	1.09
9	γ-CD	2	10	97	1.9	2.2	88	1.18
10	γ-CD	10	30	96	9.6	10.8	89	1.09
11	2,6-DM	30	60	99	29.8	ca. 80	37	1.49
12	2,3-DM	10	30	96	9.6	9.6	100	1.34

¹ DIC = DMAP/β-CD inclusion complex, AIC = adamantane/β-CD inclusion complex. ² Conversion determined by ¹H NMR (see experimental section). ³ Number-average degree of polymerization per initiating hydroxyl group calculated considering the growth of one macromolecular chain per hydroxyl group. ⁴ Number-average degree of polymerization per initiating hydroxyl group measured by ¹H NMR (see experimental section). ⁵ Relative amount (%) of the cyclodextrin OH groups that initiate the growth of a macromolecular chain calculated as follows: (DP/OH calc)/(DP/OH final)*100. ⁶ Dispersity measured by size exclusion chromatography (THF, 40 °C, PS standards, chromatograms given in the SI Section Figures S4–S13). ⁷ Blank experiment conducted with the sole DMAP/β-CD inclusion complex, without additional DMAP catalyst. ⁸ Taken from ref [23].