Synthesis and Reactivity of Ortho-Palladated Phenylacetamides. Intramolecular C−N vs C−O Reductive Coupling after CO or XyNC Insertion into the Pd−C Bond. Synthesis of Isoquinoline- and Isocoumarin-Based Heterocycles
作者:José Vicente、Pablo González-Herrero、Roberto Frutos-Pedreño、María-Teresa Chicote、Peter G. Jones、Delia Bautista
DOI:10.1021/om101110s
日期:2011.3.14
Aryl palladium complexes [PdC6H4CH2C(O)NRR′-2}I(N∧N)] (N∧N = N,N,N′,N′-tetramethylethylenediamine = tmeda, NRR′ = NH2 (1a), NHMe (1b), NMe2 (1c); N∧N = 4,4′-di-tert-butyl-2,2′-bipyridyl (dbbpy), NRR′ = NHMe (1b′)) are prepared by oxidative addition of the corresponding 2-(2-iodophenyl)acetamide to “Pd(dba)2” ([Pd2(dba)3]·dba; dba = dibenzylideneacetone) in the presence of the N∧N chelating ligand
芳基钯络合物[钯C 6 H ^ 4 CH 2 C(O)NRR'-2} I(N ∧ N)](N ∧ N = N,N,N',N'四甲基乙二胺TMEDA =,NRR'= NH 2(1A),NHMe(1B),NME 2(1C); N ∧ N = 4,4'-二-叔丁基-2,2'-联吡啶(dbbpy),NRR'= NHMe(1B' ))通过氧化加成相应的2-(2-碘苯基)乙酰胺向“PD(DBA)制备2 ”([钯2(DBA)3 ]·DBA; DBA =苄基丙酮)在N的存在∧N螯合配体。阳离子环金属化衍生物[钯κ 2 C,O -C 6 ħ 4 CH 2 C(O)NRR'-2}(N ∧ N)]光学传递函数(N ∧ N = TMEDA,NRR'= NH 2(图2a), NHMe(图2b),NME 2(图2c); N ∧ N = dbbpy,R = NHMe(2B' ))由相应的复杂的反应而得到的1用的AgOTf。2b'与PPh