phthalides
3,3-Di(hydrocarbyl) or 3-hydrocarbylidene-2-benzofuran-1(3
H
)-ones.
See:
phthaleins
Source:
PAC, 1995,
67
, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995))
on page 1359