Table 4.
| ||||
---|---|---|---|---|
entry | oxirane | recovery (%)a | ee (%)b | [α]D |
1 | 46 | >99 | −24.0 (−23.7 (lit)) | |
2 | 45 | >99 | −17.2 (+19.3 (lit (ent))) | |
3 | 42 | >99 | −9.8 | |
4c | 43 | >89d | +13.8 (+15.5 (lit)) |
Isolated chromatographically pure material. Monitored by 1H NMR.
HPLC (Regis (R,R)-Whelko-O1 column
(S,S) Co(II) salen complex
Based upon specific rotaton; unable to resolve enantiomers by HPLC