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. Author manuscript; available in PMC: 2008 Aug 13.
Published in final edited form as: J Org Chem. 2006 Sep 29;71(20):7741–7746. doi: 10.1021/jo061200h

Table 4.

Asymmetric dihydroxylation of (E,Z)-dienoates

graphic file with name nihms-61322-t0008.jpg
Entry Ligand Yield% (17) ee%b
1 (DHQ)2PHAL 63 56
2 (DHQD)2PHAL 35 70
3     DHQ-4-Me-2-Quin 50 49
4     (DHQD)2PYR 64 73
5     DHQD-9-phen 47 64
6     (DHQD)2AQN 35 61
7     DHQD-4-CLB 38 30

a) 17 is major from DHQD ligands whereas (ent)-17 is major from DHQ ligands.

b

ee% were determined by chiral HPLC