Table 1.
Asymmetric alcoholysis of succinic anhydride 1a 
| entry | cat. | ROH | t/h | conv./% | ee/% |
| 1 | DHQD-PHN(3) | MeOH | 2 | 77 | 92 |
| 2 | DHCN-PHN(5) | MeOH | 2 | 49 | 70 |
| 3 | DHQD-PHN(3) | PriOH | 12 | < 5 | — |
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