sultines

https://doi.org/10.1351/goldbook.S06130
Intramolecular cyclic esters of hydroxy sulfinic acids. (Named by supposed analogy with lactones and sultones; but the -ine ending is unfortunate).
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1370 [Terms] [Paper]