phosphonium ylides

Synonyms: phosphorus ylides, Wittig reagents
https://doi.org/10.1351/goldbook.P04563
Compounds having the structure R3P+–CR2mesomer-arrowR3P=CR2. Also known as Wittig reagents.
See: ylides
Source:
PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1358 (https://doi.org/10.1351/pac199567081307)