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Tandem Michael/intramolecular alkylation sequences

Scheme 2.43 Tandem Michael/intramolecular alkylation sequence between bro-momalonate and nitroalkenes catalysed by a preformed diamine nickel catalyst. Scheme 2.43 Tandem Michael/intramolecular alkylation sequence between bro-momalonate and nitroalkenes catalysed by a preformed diamine nickel catalyst.
A limited number of other anionic species have been employed as Michael donors in tandem vicinal difunctionalizations. In a manner similar to sulfur ylides described above, phosphonium ylides can be used as cyclopropanating reagents by means of a conjugate addition-a-intramolecular alkylation sequence. Phosphonium ylides have been used with greater frequency261-263 than sulfur ylides and display little steric sensitivity.264 Phosphorus-stabilized allylic anions can display regiospecific 7-1,4-addition when used as Michael donors.265... [Pg.259]

An original approach to the homoerythrinane framework represents the one pot tandem or domino alkylation-Michael addition sequence of 2-tetralones, followed by N-insertion via intramolecular... [Pg.52]

See other pages where Tandem Michael/intramolecular alkylation sequences is mentioned: [Pg.91]    [Pg.196]    [Pg.91]    [Pg.196]    [Pg.75]   
See also in sourсe #XX -- [ Pg.91 , Pg.93 , Pg.196 , Pg.197 , Pg.198 ]



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Alkylation intramolecular

Alkylation sequencing

Intramolecular alkylations

Michael intramolecular

Michael tandem

Tandem Michael/intramolecular

Tandem sequences

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