phosphonium ylides

Synonyms: phosphorus ylides, Wittig reagents

Compounds having the structure R3P+–C−R2mesomer-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