Synthesis and Reactivity of Ortho-Palladated 3-Phenylpropanamides. Insertion of CO, XyNC, and Alkynes into the Pd–C Bond. Synthesis of Seven- and Nine-Membered Palladacycles and Benzazepine- and Benzazonine-Based Heterocycles
作者:Roberto Frutos-Pedreño、Pablo González-Herrero、José Vicente、Peter G. Jones
DOI:10.1021/om4000192
日期:2013.3.25
Aryl palladium complexes [PdC6H4(CH2)2C(O)NRR′)-2}I(tmeda)] [NRR′ = NH2 (1a), NHMe (1b), NMe2 (1c); tmeda = N,N,N′,N′-tetramethylethylenediamine] are prepared by oxidative addition of the corresponding 3-(2-iodophenyl)propanamides to “Pd(dba)2” ([Pd2(dba)3]·dba; dba = dibenzylideneacetone) in the presence of tmeda. The cationic seven-membered palladacycles [Pdκ2C,O-C6H4(CH2)2C(O)NRR′)-2}(tmeda)]TfO
芳基钯络合物[Pd C 6 H 4(CH 2)2 C(O)NRR')-2} I(tmeda)] [NRR'= NH 2(1a),NHMe(1b),NMe 2(1c) ; 通过将相应的3-(2-碘苯基)丙酰胺氧化加成到“ Pd(dba)2 ”([Pd 2(dba)3 ]·dba中,制备tmeda =N,N,N ′,N′-四甲基乙二胺)。在tmeda存在下dba =二亚苄基丙酮)。阳离子7元钯环[钯κ 2 Ç,Ò-C 6 H 4(CH 2)2 C(O)NRR')-2}(tmeda)] TfO(2a – c)是通过1a – c与AgTfO反应获得的。类型[钯κ的中性配合物酰胺化物2 Ç,Ñ -C 6 ħ 4(CH 2)2 C(O)NR)-2}(TMEDA)] [R = H(图3a)中,Me(图3b)]通过用KO t Bu使1a或1b中的酰胺官能团去质子化而获得。1a的反应在室温下用CO生成稳定的酰基衍生物[Pd