The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3 ) is researched.Application In Synthesis of (R)-4-Hydroxydihydrofuran-2(3H)-one.Hofmayer, Maximilian S.; Sunagatullina, Alisa; Broesamlen, Daniel; Mauker, Philipp; Knochel, Paul published the article 《Stereoselective Cobalt-Catalyzed Cross-Coupling Reactions of Arylzinc Chlorides with α-Bromolactones and Related Derivatives》 about this compound( cas:58081-05-3 ) in Organic Letters. Keywords: arylated lactone diastereoselective synthesis coupling arylzinc chloride bromolactone; protected aldol diastereoselective synthesis coupling arylzinc chloride bromolactone. Let’s learn more about this compound (cas:58081-05-3).
α-Bromolactones bearing a substituent in the β-position undergo a highly trans-diastereoselective arylation with arylzinc chlorides in the presence of 10-20% CoCl2 and 10-20% PPh3 in THF under mild conditions (25°C, 16 h) leading to optically enriched α-arylated lactones and protected aldol products (99% ee) in 52-96% yield. The synthetic utility of this arylation was demonstrated by the stereoselective preparation of an artificial rotenoid MOM-protected munduserol derivative
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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem