fig20

Figure 20. Organocatalytic asymmetric tandem cyclopropanation/hemiaminalization reaction of 2’-hydroxycinnamaldehydes and stabilized α-carbonyl sulfoxonium ylides. This figure is used with permission from the American Chemical Society[80].
Figure 20. Organocatalytic asymmetric tandem cyclopropanation/hemiaminalization reaction of 2’-hydroxycinnamaldehydes and stabilized α-carbonyl sulfoxonium ylides. This figure is used with permission from the American Chemical Society[80].
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