Pentavalent organoantimony compounds as mild N-arylating agents for amines: Cu-mediated Ullmann-type N-arylation with tetraarylantimony(V) acetates.
Simple and mild Cu-mediated arylation of various amines by use of tetraarylantimony acetate (Ar(4)SbOAc) is described. The Ullmann-type condensation of Ar(4)SbOAc with aliphatic and electron rich aromatic amines proceeded efficiently in the presence of copper(II) acetate. The arylation can be carried out under aerobic conditions without care of exogenous oxygen. This simple procedure exceeds the conventional Ullmann condensation which often requires harsh reaction conditions.
Qin
Weiwei
W
Faculty of Pharmaceutical Sciences, Hokuriku University, Kanazawa, Japan.
Kakusawa
Naoki
N
Wu
Yichen
Y
Yasuike
Shuji
S
Kurita
Jyoji
J