In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 77513-58-7, name is Ethyl 2-oxotetrahydrofuran-3-carboxylate, introducing its new discovery. Recommanded Product: 77513-58-7
New Methods for Stereoselective Synthesis of alpha-Alkylidene-gamma-butyrolactones Using Monoanion of O-Ethyl S-(Tetrahydro-2-oxo-3-furanyl) Thiocarbonate and Dianion of alpha-Mercapto-gamma-butyrolactone
The lithium enolates of O-ethyl S-(tetrahydro-2-oxo-3-furanyl) dithiocarbonate and thiocarbonate were found to be efficient reagents for the stereoselective synthesis of alpha-alkylidene-gamma-butyrolactones from carbonyl compounds.The dianion of alpha-mercapto-gamma-butyrolactone was successfully generated by treatment of alpha-mercapto-gamma-butyrolactone with 2.2 equivalents of lithium diisopropylamide in the presence of N,N,N’,N’-tetramethylethylenediamine at -78 deg C in THF.The dianion thus formed has been utilized for the efficient and stereoselective synthesis of alpha-alkylidene-gamma-butyrolactones from carbonyl compounds.
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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem