110362-36-2Relevant academic research and scientific papers
Synthesis and Reactions of α-Methylene-β-keto Sulfones
Weichert, Andreas,Hoffmann, H. Martin R.
, p. 4098 - 4112 (1991)
Modified Jones oxidation of 2-(benzenesulfonyl)-2-alken-1-ols and rapid nonnucleophilic workup below 0 deg C yields a variety of α-methylene-β-keto sulfones 4, including crystalline parent 4a and also e-h, which can be stored at -20 deg C without change.I
DIMERIZATION OF (E)-2-BENZENESULFONYL-1,3-ALKADIENES. THE BENZENESULFONYL GROUP EXERTS ACYCLIC STEREOCONTROL
Hoffmann, H. Martin R.,Weichert, Andreas,Slawin, Alexandra M. Z.,Williams, D. J.
, p. 5591 - 5602 (2007/10/02)
Mild dehydration of 2-benzenesulfonyl allylic alcohols 8 afforded a series of (E)-2-benzenesulfonyl-1,3-alkadienes 1 which dimerized to functionalized vinylcyclohexenes 3 in regio- and stereodefined manner.The configuration at C-3 in 3e was determined by
PREPARATION AND NUCLEOPHILIC SUBSTITUTION OF (E)-1-BROMO-2-PHENYLSULFONYL-2-ALKENES AND 3-ACETOXY-2-PHENYLSULFONYL-1-ALKENES
Auvray, P.,Knochel, P.,Normant, J. F.
, p. 6095 - 6106 (2007/10/02)
Vinylphenylsulfone reacts with aldehydes to yield sulfonylated secondary allylic alcohols wich are converted to either primary allylic bromides, or secondary allylic acetates.Both react highly regioselectively with lithium cyanocuprates, or enolates.
AN EASY SYNTHESIS OF THE 2-PHENYLSULFONYL-SUBSTITUTED ALLYLIC BROMIDES AND ACETATES AND THEIR REACTIVITY TOWARDS NUCLEOPHILES
Auvray, P.,Knochel, P.,Normant, J. F.
, p. 5095 - 5098 (2007/10/02)
The reaction of phenyl vinyl sulfone with various aldehydes in the presence of a catalytic amount of DABCO furnishes in good yields the corresponding 2-phenylsulfonyl-substituted alcohols 5a-5e which can be easily converted into their acetates 2a-2b or into their allylically rearranged bromides 3a-3d.These reagents, in turn, react with nucleophiles (ketone enolates and cuprates) with an allylic rearrangement (SN2' mechanism) to give the functionalized unsaturated sulfones 6a-g and 7a-g.A palladium catalyzed reaction allows a stereo-controlled transformation of the sulfone 6b into the (Z,Z) skipped 1,4-diene 8.
