Formation of sulfinate esters in the synthesis of triflates
作者:Thomas Netscher、Patrick Bohrer
DOI:10.1016/0040-4039(96)01930-2
日期:1996.11
and phenols with triflicanhydride in the presence of amines, trifluoromethanesulfinyl esters were unexpectedly found. Depending on the reaction conditions and the structures of both hydroxy compound and base, esterified products (yields <5% to 99%) containing 0% to 89% (!) of sulfinates were obtained. The mechanisms of these reactions are discussed. The results of the present study indicate how to
Modular Approach for Synthesis of Vicinal Diamines Containing Axial Chiral 1,1′-Binaphthyl from 1,2-Diaminoethane by Pd-Catalyzed N-Arylation Reactions
A very convenient and efficient modular approach for the synthesis of vicinaldiamines containing axial chiral 1,1′-binaphthyl from 1,2-diaminoethane by Pd-catalyzed N-arylation reactions has been developed. The resulting chiral diamines could be easily converted into NHC precursors, imidazole salts, in good yields.