Efficient Suzuki Coupling of Aryl Chlorides Catalyzed by Palladium(0) with a P,N Heteroligand and Isolation of Unsaturated Intermediates
摘要:
A mixture of Pd-2(dba)(3) / [eta-C5H4CH=N(C6H5)]-Fe[eta-C5H4P(t-Bu)(2)] (1) efficiently catalyzes the Suzuki cross-couplings of a range of arylboronic acids and aryl chlorides, affording the desired biaryl products in high isolated yields. Two catalytically active Pd(0) intermediates, viz. 16-electron [eta-C5H4CH=N(C6H5)]Fe[eta-C5H4P(t-Bu)(2)]Pd(dba) (2) and 14-electron linear Pd{[eta-C5H4CH=N(C6H5)]Fe[eta-C5H4P(t-BU)(2)]}(2) (3) together with an oxidative addition product are isolated and crystallographically established.
Efficient Suzuki Coupling of Aryl Chlorides Catalyzed by Palladium(0) with a P,N Heteroligand and Isolation of Unsaturated Intermediates
摘要:
A mixture of Pd-2(dba)(3) / [eta-C5H4CH=N(C6H5)]-Fe[eta-C5H4P(t-Bu)(2)] (1) efficiently catalyzes the Suzuki cross-couplings of a range of arylboronic acids and aryl chlorides, affording the desired biaryl products in high isolated yields. Two catalytically active Pd(0) intermediates, viz. 16-electron [eta-C5H4CH=N(C6H5)]Fe[eta-C5H4P(t-Bu)(2)]Pd(dba) (2) and 14-electron linear Pd{[eta-C5H4CH=N(C6H5)]Fe[eta-C5H4P(t-BU)(2)]}(2) (3) together with an oxidative addition product are isolated and crystallographically established.