Resolution of alkyl pyridyl sulfoxides by complexation with a chiral host compound derived from tartaric acid was written by Zhu, Jin;Qin, Yong;He, Ze;Fu, Fang-Min;Zhou, Zhong-Yuan;Deng, Jin-Gen;Jiang, Yao-Zhong;Chau, Tay-Yuan. And the article was included in Tetrahedron: Asymmetry in 1997.Reference of 93379-49-8 This article mentions the following:
Alkyl pyridyl sulfoxides I (R = Me, Et) were prepared in high enantiomeric excess by resolution through inclusion complexation with a chiral host compound, (2R,3R)- or (2S,3S)-(-)-trans-4,5-bis(hydroxydiphenylmethyl)-2,2-dimethyl-1,3-dioxolane (II). The X-ray crystallog. structure anal. of complex (R,R)-(-)-II with (R)-(-)-I (R = Et) is reported. In the experiment, the researchers used many compounds, for example, ((4S,5S)-2,2-dimethyl-1,3-dioxolane-4,5-diyl)bis(diphenylmethanol) (cas: 93379-49-8Reference of 93379-49-8).
((4S,5S)-2,2-dimethyl-1,3-dioxolane-4,5-diyl)bis(diphenylmethanol) (cas: 93379-49-8) belongs to dioxole derivatives. Dioxoles, particularly fluorinated dioxoles, are used as co-monomers to make polymers that find use in forming protective coatings for chemical resistance. 1,3-Benzodioxole can be synthesized from catechol with disubstituted halomethanes.Reference of 93379-49-8
Referemce:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem