Alkene synthesis: elimination of arenesulfinic acid from alkyl aryl sulfones using potassium trimethylsilanolate as base
作者:Charles A.G. Baker-Glenn、Anthony G.M. Barrett、Andrew A. Gray、Panayiotis A. Procopiou、Mark Ruston
DOI:10.1016/j.tetlet.2005.08.097
日期:2005.10
The use of potassium trimethylsilanolate as base to induce elimination of potassium arenesulfinate from alkylarylsulfones to produce E-alkenes is described. The reaction was appropriate for substrates containing a benzyl or allyl group α to the sulfone residue.
Catalyzed by palladium(II) chloride, a diverse range of arylsulfinatesodium, potassium, lithium, silver, zinc, and copper salts undergo desulfination/C–P coupling with H-phosphonates, in the presence of silver(I) carbonate as oxidant, to produce useful arylphosphonates under microwave irradiation.
GRAPHICAL ABSTRACT Abstract This paper reports a palladium-catalyzed C-S coupling of arylsulfinate metal salts and alkanethiols via liberation of sulfur dioxide. The use of PdCl2 as the catalyst in combination with AgNO3 as the oxidant under microwave irradiation results in the synthetically and biologically important aryl alkyl sulfides. A variety of arylsulfinate metal salts, such as sodium, potassium
A New Preparative Method of Thiocyanates by the Solid State Thiosulfonate/Cyanide Reaction
作者:Kiyoko Fujiki、Eiji Yoshida
DOI:10.1080/00397919908085956
日期:1999.10
Abstract The mixing and heating of thiosulfonates with potassium cyanide in the solidstate gave a variety of thiocyanates in good yield. This method provides easy access to aryl thiocyanates.
Unusual KOH-induced ring-openingreactions of the bis-tosylhydrazones of dibenzobicyclo[2.2.2]octadiene-2,3-dione and acenaphthenequinone are described.