128496-99-1Relevant articles and documents
A sulfone-based strategy for the preparation of 2,4-disubstituted furan derivatives
Haines, Nathan R.,VanZanten, Aaron N.,Cuneo, Anthony A.,Miller, John R.,Andrews, William J.,Carlson, David A.,Harrington, Ryan M.,Kiefer, Adam M.,Mason, Jeremy D.,Pigza, Julie A.,Shaun Murphree
, p. 8131 - 8137 (2011/11/28)
2,4-Disubstituted furans are prepared by treating 2,3-dibromo-1- phenylsulfonyl-1-propene (DBP, 2) with 1,3-diketones under basic conditions. The furan-forming step involves a deacetylation, and the selectivity of this process depends upon the steric demand of the R group. The substituent in position 4 is elaborated by reaction of sulfonyl carbanions with alkyl halides, acyl halides, and aldehydes. Oxidative or reductive desulfonylation produces the 2,4-disubstituted furans in 60-92% yield. This strategy has been used to prepare rabdoketone A (12) and the naturally occurring nematotoxic furoic acid 13. (Figure presented)
Use of 2,3-Dibromo-1-(phenylsulfonyl)-1-propene as a Reagent for the Synthesis of Annulated Furans
Padwa, Albert,Murphree, S. Shaun,Yeske, Philip E.
, p. 4241 - 4242 (2007/10/02)
Treatment of 2,3-dibromo-1-(phenylsulfonyl)-1-propene with various β-dicarbonyl compounds in the presence of sodium methoxide affords 2,4-disubstituted and 2,3-fused bicyclic furans in high yield.Formation of the furan ring involves a sequence of addition
