67902-88-9Relevant articles and documents
REGIOSELECTIVE CONJUGATE ADDITION OF SULFONYLALLYL CARBANIONS TO α,β-UNSATURATED KETONES
Hirama, Masahiro
, p. 1905 - 1908 (2007/10/02)
Ambident lithium carbanions of allyl phenyl sulfones add 1,4-α to both acyclic and cyclic enones exclusively if HMPA is present in the medium; in contrast, 1,2-α addition to cyclic enone is the major kinetic course in the absence of HMPA, which is followed by rearrangement to the 1,4-γ adduct.