Tetrahedron p. 8449 - 8464 (1993)
Update date:2022-07-30
Topics:
Pyne, Stephen G.
Boche, Gernot
The synthesis of allylic sulfoximines 3 and 4 is described.The conjugate addition reactions of lithiated 4 with cyclic and acyclic Michael acceptors gives mainly 1,4-γ and 1,4-α adducts respectively in THF and 1,4-γ adducts respectively in HMPA/THF.The reaction of lithiated 4 and benzaldehyde gives only 1,2-α adducts in THF, however 1,2-α and 1,2-γ adducts were isolated when HMPA/THF was employed as solvent.Benzophenone gave only the 1,2-γ adduct.
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