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29.3.2.2.7 Method 7: Formation of Carbonyl Ylides

DOI: 10.1055/sos-SD-029-00127

Benneche, T.Science of Synthesis, (200729150.

1,3-Dipolar reagents are important reagents for the synthesis of five-membered heterocylic compounds by [2+3]-cycloaddition reactions.[‌172‌] The stabilized carbonyl ylides 133, which are members of this class of compounds, can be prepared by treatment of the silyl-substituted α-chloro ethers 132 with fluoride ions under neutral conditions; two of the resonance forms of the products are depicted (Scheme 65).[‌173‌,‌174‌]

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