scheme6
![Organocatalytic regio- and enantioselective formal [4 + 2]-annulation of chiral nitrogen-containing dipoles](https://image.oaes.cc/b9b30f0a-ea14-42f0-9762-04cc46829046/5421.scheme.6.jpg)
Scheme 6. Comparison of the calculated ECD of compound (3S,4R)-3aa with the experimental one of compound 3aa.
Scheme 6. Comparison of the calculated ECD of compound (3S,4R)-3aa with the experimental one of compound 3aa.
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