scheme3
![Recent advances in organocatalytic cascade reactions for enantioselective synthesis of chiral spirolactone skeletons](https://image.oaes.cc/81dabbbc-923b-43d2-a26d-fe5689f6999d/5406.scheme.3.jpg)
Scheme 3. Asymmetric [3 + 2] cycloaddition reactions of benzolactone-derived olefins 1 and Morita-Baylis-Hillman carbonates 2. This figure is used with permission from the American Chemical Society[32].
Scheme 3. Asymmetric [3 + 2] cycloaddition reactions of benzolactone-derived olefins 1 and Morita-Baylis-Hillman carbonates 2. This figure is used with permission from the American Chemical Society[32].
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