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Scope of the tandem CEYM-IMDAR protocol.
 | |||
| entry | 1 (R) | 2 | 3 (yield)a |
| 1 | 1a (H) |
 2a |
 3a (57%) |
| 2 | 1a (H) |
 2b |
 3b (38%) |
| 3 | 1a (H) |
 2c |
 3c (62%) |
| 4 | 1b (F) |
 2c |
 3d (45%) |
| 5 | 1c (OMe) |
 2c |
 3e (35%) |
| 6 | 1a (H) |
 2d |
 3f (50%) |
| 7 | 1a (H) |
 2e |
 3g (44%) |
aIsolated yields after column chromatography. All final products 3 were obtained as single diastereoisomers.
