Aryl Sulfoxides via Palladium-Catalyzed Arylation of Sulfenate Anions
作者:Guillaume Maitro、Sophie Vogel、Guillaume Prestat、David Madec、Giovanni Poli
DOI:10.1021/ol062315a
日期:2006.12.1
[Structure: see text] Palladium-catalyzedarylation of sulfenate anions generated from beta-sulfinyl esters can take place under biphasic conditions. This hitherto unknown reaction provides a simple, mild, and efficient route to aryl sulfoxides in good yields. The development of a new pseudo-domino type I procedure involving a sulfinylation followed by a Mirozoki-Heck coupling is also described.
One-Pot Sulfoxide Synthesis Exploiting a Sulfinyl-Dication Equivalent Generated from a DABSO/Trimethylsilyl Chloride Sequence
作者:Danny C. Lenstra、Vincent Vedovato、Emmanuel Ferrer Flegeau、Jonathan Maydom、Michael C. Willis
DOI:10.1021/acs.orglett.6b00712
日期:2016.5.6
sulfinate intermediate. In situ conversion of the sulfinate to a sulfinate silyl ester, using TMS-Cl (trimethylsilylchloride), generates a second electrophile, allowing addition of a second organometallic reagent. Organolithium or Grignard reagents can be employed, delivering sulfoxides in good to excellent yields.
Aryl Sulfoxides from Allyl Sulfoxides via [2,3]-Sigmatropic Rearrangement and Domino Pd-Catalyzed Generation/Arylation of Sulfenate Anions
作者:Elise Bernoud、Gaëtan Le Duc、Xavier Bantreil、Guillaume Prestat、David Madec、Giovanni Poli
DOI:10.1021/ol902620t
日期:2010.1.15
Allylic sulfoxides, via [2,3]-sigmatropic rearrangement and oxidative addition of the resulting allylic sulfenate esters to Pd(0), are found to be excellent precursors of sulfenate anions. This hitherto unknown reactivity is applied in a new Pd(0)-catalyzed domino sequence involving sulfenate anion generation followed by arylation to afford aryl sulfoxides.
Enantioselective Synthesis of Aryl Sulfoxides via Palladium-Catalyzed Arylation of Sulfenate Anions
作者:Guillaume Maitro、Sophie Vogel、Mounel Sadaoui、Guillaume Prestat、David Madec、Giovanni Poli
DOI:10.1021/ol702343g
日期:2007.12.1
Arylation of various sulfenate anions generated from beta-sulfinyl esters by retro-Michael reaction in the presence of palladium(0) and enantiopure ligands gave the corresponding aryl sulfoxides in enantio-enriched form. The Josiphos-type ligand (R)-(S)-PPF-t-Bu2 turned out to be the best ligand tested, allowing ee's up to 83% in a predictable sense.