Reductive cleavage of geminal bis-phenylsulfones using lithium naphthalenide in THF at -78 degrees C selectively affords alpha-sulfonyl carbanions which participate in typical reaction with electrophiles.
4-(Phenylsulfonyl)-4-lithiocyclopentene as a nucleophilic 2-pentene-1,5-dial synthetic equivalent. An aziridine-based synthetic approach to (−)-alstonerine
作者:Paul Cox、Donald Craig、Stephanos Ioannidis、Volker S. Rahn
DOI:10.1016/j.tetlet.2005.04.033
日期:2005.7
silyl dienol ether formation followed by completely stereoselective hetero-Diels–Alder reaction with monomeric formaldehyde gives a late-stage intermediate in a planned totalsynthesis of the macroline-relatedalkaloid (−)-alstonerine.
SmI2 mediates the in situ reductive addition of geminal bis-phenylsulfones to unhindered ketones at room temperature affording beta-hydroxyphenylsulfones in good to excellent yields.
Stereospecific dehydrative alkylation of bis-sulfones: synthesis of a lesser tea tortrix pheromone
作者:Jurong Yu、Hyun Sung Cho、J. R. Falck
DOI:10.1021/jo00074a010
日期:1993.10
The intra- and intermolecular condensation of alcohols with bis-sulfone methylenes, i.e., dehydrative alkylation, using DEAD and Ph3P proceeds stereospecifically at room temperature under essentially neutral conditions affording good to excellent yields of alkylation/annulation products.
Yu Jurong, Cho Hyun-Sung, Chandrasekhar S., Falck J. R., Mioskowski Charl+, Tetrahedron Lett, 35 (1994) N 30, S 5437-5440
作者:Yu Jurong, Cho Hyun-Sung, Chandrasekhar S., Falck J. R., Mioskowski Charl+
DOI:——
日期:——
NANTZ M. H.; RADISSON X.; FUCHS P. L., SYNTH. COMMUN., 17,(1987) N 1, 55-69