Larcheveque, Marc; Henrot, Serge published an article about the compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3,SMILESS:O=C1OC[C@H](O)C1 ).HPLC of Formula: 58081-05-3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:58081-05-3) through the article.
The preparation of optically pure β,γ-epoxy esters I (R = H, Me) was achieved through the opening of 3-hydroxy butanolides II with trimethylsilyl iodide followed by cyclization with silver oxide. I react with organocuprates to afford β-hydroxy esters III (R1 = Me, Et, Bu, Me2C:CH, BuCH:CH) of high enantiomeric purity.
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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem