fig9
![Application of sulfonium and sulfoxonium ylides in organocatalyzed asymmetric reaction](https://image.oaes.cc/2e87a9a0-e4ad-4eb1-a70b-eabf4d5148b8/5474.fig.9.jpg)
Figure 9. ortho-chlorophenyl thiourea/DMAP cooperative catalysis for the [4 + 1] cyclization reaction of nitroolefins and stable sulfonium ylides. This figure is used with permission from the American Chemical Society[54].
Figure 9. ortho-chlorophenyl thiourea/DMAP cooperative catalysis for the [4 + 1] cyclization reaction of nitroolefins and stable sulfonium ylides. This figure is used with permission from the American Chemical Society[54].
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