Heterogeneous gold(I)-catalyzed hydroamination of allenamides with arylamines toward allylamino E-enamides
A novel and highly efficient heterogeneous gold(I)-catalyzed hydroamination of allenamides with arylamines has been developed that proceeds effectively under mild conditions and offers a general and practical route for the synthesis of allylamino E-enamides with good to excellent yields and high stereoselectivity. The supported gold(I) catalyst can be reused at least seven times without any apparent decrease in the catalytic activity.
Jiang, Minhua,Liu, Dayi,Cai, Mingzhong
supporting information
p. 1700 - 1711
(2021/03/31)
Regiospecific Hydroamination of Unsymmetrical Electron-Rich and Electron-Poor Alkynes with Anilines Catalyzed by Gold(I) Immobilized in MCM-41
The first heterogeneous gold(I)-catalyzed regiospecific hydroamination of ynamides and propiolic acid derivatives with anilines has been achieved by using a diphenylphosphine-functionalized MCM-41-supported gold (I) complex and AgNTf2 as catalysts under mild conditions, yielding the corresponding (E)-N-arylimines and (Z)-enamines in good to excellent yields with broad substrate scope. The new heterogeneous gold(I) complex can easily be prepared via a two-step procedure from commercially available reagents and recovered by simple filtration of the reaction mixture. The recovered catalyst (Ph2P-MCM-41-AuNTf2) can be reused at least seven times without addition of AgNTf2 as a co-catalyst and its catalytic efficiency remains unaltered. (Figure presented.).
Liu, Dayi,Nie, Quan,Zhang, Rongli,Cai, Mingzhong
supporting information
p. 3940 - 3948
(2018/09/14)
An intermolecular hydroamination of allenamides with arylamines catalyzed by cationic Au(I) salts
(Figure presented) An intermolecular hydroamination of allenamides with arylamines has been achieved under mild Au(I) catalysis conditions delivering allylamino E-enamides stereoselectively and in high yield. The reaction is made possible via a convenient method for conjugated N-acyliminium formation.
Hill, Anthony W.,Elsegood, Mark R. J.,Kimber, Marc C.
supporting information; experimental part
p. 5406 - 5409
(2010/10/02)
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