Meslard, J. C. published the artcileSynthesis of cyclic acetals under mild conditions. Applications to the acetalization of chloramphenicol, Quality Control of 1193-11-9, the publication is Bulletin de la Societe Chimique de France (1985), 84-9, database is CAplus.
Acetalization of 1-2 and 1-3 diols, even as sterically crowded as chloramphenicol, by carbonyl derivatives with substituents of various sizes has been performed at room temperature under mild conditions, by using heterogeneous catalysis (sulfonated polystyrene) in the presence of mol. sieves. Several new acetals of chloramphenicol e.g. I, have thus been obtained in good yields, isolated and characterized.
Bulletin de la Societe Chimique de France published new progress about 1193-11-9. 1193-11-9 belongs to dioxole, auxiliary class Dioxolanes, name is 2,2,4-Trimethyl-1,3-dioxolane, and the molecular formula is C6H12O2, Quality Control of 1193-11-9.
Referemce:
https://en.wikipedia.org/wiki/1,3-Benzodioxole,
Dioxole | C3H4O2 – PubChem