In chemistry, a sultine is a cyclic

ester In chemistry, an ester is a compound derived from an oxoacid (organic or inorganic) in which at least one hydroxyl group () is replaced by an alkoxy group (), as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides ...

of a

sulfinic acid Sulfinic acids are oxoacids of sulfur with the structure RSO(OH). In these organosulfur compounds, sulfur is pyramidal. Structure and properties Sulfinic acids RSO2H are about 1000x more acidic than the corresponding carboxylic acid RCO2H. Sul ...

. This class of

organosulfur compound Organosulfur compounds are organic compounds that contain sulfur. They are often associated with foul odors, but many of the sweetest compounds known are organosulfur derivatives, e.g., saccharin. Nature abounds with organosulfur compounds—sulf ...

s has few applications. These compounds are typically prepared by the dehydration of hydroxy-sulfinic acids or their equivalent. Illustrative of an alternative route, xylylene dibromide reacts with sodium sulfoxylate (source of SO₂^2-) to give the sultine C₆H₄(CH₂S(O)OCH₂), which is a precursor to o- quinodimethane.{{cite book, first1=Donald C., last1=Dittmer, first2=Michael D., last2=Hoey , chapter=Cyclic Sulphinic Acid Derivatives (Sultines and Sulphinamides), page = 239-273, year=1981, editor=Saul Patai, title=Sulphinic Acids, Esters and Derivatives, doi=10.1002/9780470772270.ch9, publisher=John Wiley & Sons, series=PATAI'S Chemistry of Functional Groups, isbn=9780470772270

References

Functional groups Sulfinic acids Organosulfur compounds