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Michael addition of lithium enolates of gamma-butyrolactone 1 and alpha-methyl-gamma-butyrolactone 1? to (E)-1-nitropropene 2, (E)-beta-nitrostyrene 3 and (E)-2-nitro-1-phenylpropene 4 is described. Reactions of the lithium enolate of 1? with 2 and 4 occurred with high diasteroselectivity (80 and 92% d.e., respectively). Reactions of the zinc enolate of 1? with two beta-nitroenamines and two methylthio-substituted 1-amino-2-nitro-1,3-dienes were also examined. Catalytic reduction of the nitroalkylated and nitroalkenylated products allowed the achievement of functionalized gamma-lactams and/or cyclic hydroxamic acids.
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Recommanded Product: 3-Methyldihydrofuran-2(3H)-one, you can also check out more blogs about1679-47-6
Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem