Palladium‐Catalyzed/Mn(OAc)3‐Mediated 1,2‐Diazidation and 1,2‐Acetoxy/Hydroxylation of N‐Allyl Sulfonamides
作者:Camilla Loro、Marta Papis、Sara Colombo、Leonardo Lo Presti、Giovanni Poli、Gianluigi Broggini、Julie Oble
DOI:10.1002/adsc.202400035
日期:——
Palladium‐catalyzedconditions for diazidation or acetoxy/hydroxylation of N‐allyl sulfonamides by using Pd(OAc)2 as the catalyst combined with Mn(OAc)3·2H2O have been developed. The 1,2‐diazidation reaction of the carbon‐carbon double bond occurs in mild conditions (i.e. NaN3 as azide source in THF at roomtemperature), whereas the 1,2‐acetoxy/hydroxylation requires an excess of Mn(OAc)3·2H2O. The
Synthesis of substituted 3-arylpiperidines and 3-arylpyrrolidines by radical 1,4 and 1,2-aryl migrations
作者:Alexandru Gheorghe、Béatrice Quiclet-Sire、Xavier Vila、Samir Z. Zard
DOI:10.1016/j.tet.2007.04.091
日期:2007.7
A route to 3-arylpiperidines and 3-arylpyrrolidines involving radical 1,4- and 1,2-aryl migrations has been explored. For the piperidines, the first route requires a xanthate addition to an N-allylarylsulfonamide, followed by acetylation and treatment with lauroyl peroxide to give the corresponding 1,4-aryl transfer product. This compound can be converted into the desired piperidine derivative following