NucleophilicOrthoAllylation of Aryl and Heteroaryl Sulfoxides
摘要:
Aryl and heteroaryl sulf oxides undergo ortho allylation upon treatment with Tf2O and allyisilanes. The method complements the use of sulfoxides to direct ortho-metalation and reaction with electrophiles as it allows allylic carbon nucleophiles to be added ortho to the directing group in a metal-free process. The versatile sulfide adducts can be selectively manipulated using various methods Including Kumada-Corriu cross-coupling of the organosulfanyl group.
Highly Regioselective Nucleophilic Carbon−Carbon Bond Formation on Furans and Thiophenes Initiated by Pummerer-Type Reaction
作者:Shuji Akai、Norihito Kawashita、Hideharu Satoh、Yasufumi Wada、Keisuke Kakiguchi、Ikumi Kuriwaki、Yasuyuki Kita
DOI:10.1021/ol0484310
日期:2004.10.1
[reaction: see text] The reactions of (phenylsulfinyl)furans or -thiophenes with carbon nucleophiles in the presence of trifluoroacetic anhydride allowed the nucleophilic installation of carbon functional groups on the furan and thiophene nuclei with complete regioselectivity.
Nucleophilic<i>Ortho</i>Allylation of Aryl and Heteroaryl Sulfoxides
作者:Andrew J. Eberhart、Jason E. Imbriglio、David J. Procter
DOI:10.1021/ol2025197
日期:2011.11.4
Aryl and heteroaryl sulf oxides undergo ortho allylation upon treatment with Tf2O and allyisilanes. The method complements the use of sulfoxides to direct ortho-metalation and reaction with electrophiles as it allows allylic carbon nucleophiles to be added ortho to the directing group in a metal-free process. The versatile sulfide adducts can be selectively manipulated using various methods Including Kumada-Corriu cross-coupling of the organosulfanyl group.