Regioselective cyclopropanation of 2-phenylsulfonyl 1,3-dienes
Regioselective cyclopropanation of 2-phenylsulfonyl 1,3-dienes at either double bond was achieved by employing two different reagent. Sulfur ylide 1 resulted in a regiospecific cyclopropanation at the electron deficient double bond whereas an iron carbene
Baeckvall, Jan-E.,Loefstroem, Claes,Juntunen, Seppo K.,Mattson, Matthew
Substitution of P(O)Ph2, SOPh, and SO2Ph on an allene facilitates intramolecular radical addition to the central allene carbon to provide good yields of five-, six-, and seven-membered carbocycles.
Crandall,Ayers
p. 3659 - 3662
(2007/10/02)
Geminal Alkylations: Substitutions of Allyl Sulfones. Regiocontrol via Molybdenum Catalysis
Base-catalyzed geminal alkylation of allyl sulfones combined with the ability of molybdenum to direct nucleophilic substitution of the sulfone converts allyl sulfones into 1,1- and 1,3-dipole synthons.
Trost, Barry M.,Merlic, Craig A.
p. 1127 - 1129
(2007/10/02)
1,1- und 1,o-Dilithio-allylphenylsulfon: Synthese, geminale Cycloalkylierung und Lithium-Titan-Austausch
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Vollhardt, Juergen,Gais, Hans-Joachim,Lukas, Karl L.
p. 607 - 609
(2007/10/02)
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