Hypervalent Iodine Chemistry: New Oxidation Reactions Using the Iodosylbenzene−Trimethylsilyl Azide Reagent Combination. Direct α- and β-Azido Functionalization of Triisopropylsilyl Enol Ethers
作者:Philip Magnus、Jérôme Lacour、P. Andrew Evans、Michael B. Roe、Christopher Hulme
DOI:10.1021/ja953906r
日期:1996.1.1
Treatment of triisopropylsilyl (TIPS) enolethers with PhIO/TMSN3/at −18 to −15 °C rapidly (5 min) gave β-azido TIPS enolethers in high yields, with only traces of the α-azido adduct. The reaction...
New trialkylsilyl enol ether chemistry: direct 1,2-bis-azidonation of triisopropylsilyl enol ethers: an azido-radical addition process promoted by TEMPO
作者:Philip Magnus、Michael B. Roe、Christopher Hulme
DOI:10.1039/c39950000263
日期:——
Treatment of triisopropylsilyl enolethers with PhIO/TMSN3/TEMPO (cat.)–45 °C results in 1,2-bis-azidonation, which appears to occur through a radical addition process; the 1-azido group can be replaced by carbon nucleophiles such as allyl, methyl, cyano, acetylene and acetonyl.