oxonium ylides

  1. Compounds having the structure R2O+–CR2.
    See: ylides
  2. A class of 1,3-dipolar compounds of general structure R2C=O+–Y , comprising carbonyl imides, carbonyl oxides and carbonyl ylides.
Source:
PAC, 1995, 67, 1307 (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1355