Table 2.
Entry | Gen-lactam feed ratio | Mn(GPC)a | Đ b | [α] c | FB d | Yield e |
---|---|---|---|---|---|---|
P5' | 0 | 37,200 | 1.05 | +82.5 | N.D. | 88 |
P6' | 10 | 41,400 | 1.05 | +78.6 | N.D. | 91 |
P7' | 30 | 38,600 | 1.06 | +72.8 | N.D. | 90 |
P8' | 50 | 35,800 | 1.08 | +64.1 | N.D. | 87 |
P9' | 70 | 34,600 | 1.04 | +58.1 | N.D. | 84 |
P5 | 0 | 17,500 | 1.34 | +152.0 | 0 | 80 |
P6 | 10 | 21,100 | 1.37 | +137.6 | 10.3 | 89 |
P7 | 30 | 18,600 | 1.36 | +114.7 | 31.2 | 86 |
P8 | 50 | 17,700 | 1.47 | +87.9 | 49.5 | 92 |
P9 | 70 | 17,400 | 1.30 | +78.3 | 71.8 | 85 |
aDetermined by THF GPC against polystyrene standards for P5'-P9', or aqueous GPC against dextran standards for P5-P9, g/mol.
bMw/Mn.
cMeasured by polarimeter in chloroform for P5'-P9' or water for P5-P9, °.
dDetermined from 1H NMR spectra; N.D., not determined.
eIsolated yield, %.