P,N,N-镍镍配合物[Ni(Cl){N(2-R 2 PC 6 H 4)(2'-Me 2 NC 6 H 4)}](R = Ph,3a ; R = Pr i,合成了3b; R = Cy,3c),并评估了它们对芳基氟化物和氯化物的Kumada或Negishi交叉偶联反应的催化作用。在室温下,配合物3a有效催化(杂)芳基氟化物与芳基格氏试剂的交叉偶联。复杂3a 它还在低催化剂负载和良好的官能团相容性下,于80°C催化(杂)芳基氯和芳基锌试剂的交叉偶联。
method from commercially available aromatic halides has been used for the synthesis of a series of donor/acceptor para-substituted biphenyls, DC6H4C6H4A, where D is an electron donor group and A an electron acceptor group, which are of interest as liquid crystal precursors and as having potential in non-linear optics. Biaryls in which the donor-phenyl moiety is replaced by a 2-furyl or 2-thienyl can
P,N,N-Pincer nickel-catalyzed cross-coupling of aryl fluorides and chlorides
作者:Dan Wu、Zhong-Xia Wang
DOI:10.1039/c4ob01041h
日期:——
were synthesized and their catalysis toward the Kumada or Negishi cross-coupling reaction of aryl fluorides and chlorides was evaluated. Complex 3a effectively catalyzes the cross-coupling of (hetero)aryl fluorides with aryl Grignard reagents at room temperature. Complex 3a also catalyzes the cross-coupling of (hetero)arylchlorides and arylzinc reagents at 80 °C with low catalyst loadings and good
P,N,N-镍镍配合物[Ni(Cl)N(2-R 2 PC 6 H 4)(2'-Me 2 NC 6 H 4)}](R = Ph,3a ; R = Pr i,合成了3b; R = Cy,3c),并评估了它们对芳基氟化物和氯化物的Kumada或Negishi交叉偶联反应的催化作用。在室温下,配合物3a有效催化(杂)芳基氟化物与芳基格氏试剂的交叉偶联。复杂3a 它还在低催化剂负载和良好的官能团相容性下,于80°C催化(杂)芳基氯和芳基锌试剂的交叉偶联。