The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 5-Methylfuran-2(3H)-one, is researched, Molecular C5H6O2, CAS is 591-12-8, about Construction of Enantioenriched γ,γ-Disubstituted Butenolides Enabled by Chiral Amine and Lewis Acid Cascade Cocatalysis, the main research direction is butenolide preparation enantioselective regioselective chemoselective; alkynoic acid aldehyde tandem cyclization amine Lewis catalyst.Recommanded Product: 591-12-8.
A cascade cocatalysis strategy for the facile construction of chiral γ,γ-disubstituted butenolides I (R1 = Me, Et; R2 = Ph, 1-naphthyl, 2-furyl, etc.) has been described. The synthetic manifold employs simple alkynoic acids R1CCCH2C(O)2H instead of the preformed silyloxy furans or 5-substituted furan-2(3H)-ones II. In situ formed 5-substituted furan-2(3H)-ones II by AgNO3 or Ph3PAuCl/AgOTf catalyzed cyclization of alkynoic acids can smoothly engage in the subsequent chiral diphenylprolinol TMS-ether catalyzed Michael and Michael-aldol reactions. The cascade process serves as a general approach to chiral quaternary γ,γ-disubstituted butenolides I.
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Reference:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia