[6,5] CNN Palladium(II) Pincer Complexes Containing <i>N</i>-Substituted Monoanionic and Dianionic Guanidinate Ligands: Syntheses, Structural Aspects, and Their Utility in Suzuki–Miyaura Coupling Reactions
作者:Nitish Kumar Sinha、Natesan Thirupathi
DOI:10.1021/acs.organomet.1c00414
日期:2021.11.8
analogous reaction involving 1 and Pd(OC(O)tBu)2 afforded [Pdκ3(C,N,N)}(μ-OC(O)tBu)Pdκ3(C,N,N)}] (5). The analogous reactions of 2 with Pd(OC(O)R′)2 (R′ = Me, tBu and CF3) afforded [Pdκ3(C,N,N)}(μ-OC(O)R′)Pdκ3(C,N,N)}] (R′ = Me (6) and tBu (7)) and [Pdκ3(C,N,N)}(OC(O)CF3)] (8), respectively. Complexes 5–7 were treated with 2 equiv of Lewis bases, L at RT to afford [Pdκ3(C,N,N)}(L)] [L = PPh3(9), 4-aminopyridine
胍 [(ArNH)(ArN=)CN(H)(C(O)Py-2)] (Ar = 2-RC 6 H 4 ; R = Me ( 1 ) 和 CF 3 ( 2 )) 与研究了 Pd(OC(O)R') 2 (R' = Me、t Bu 和 CF 3 ),旨在了解取代基效应对所得产物性质的影响。的反应中1,用Pd(OC(O)R')2(R'=我和CF 3)的甲苯在65℃下,得到[钯κ 3(ç,Ñ,Ñ)}(OC(O)R ')] (R' = Me ( 3 ) 和 CF 3 (4 )),而涉及1和 Pd(OC(O) t Bu) 2的类似反应得到 [Pdκ 3 ( C , N , N )}(μ-OC(O) t Bu)Pdκ 3 ( C , N , N )}] ( 5 )。2与 Pd(OC(O)R') 2 (R' = Me, t Bu and CF 3 )的类似反应得到 [Pdκ 3 ( C , N , N )}(μ-OC(O)R