Competitive or sequential reaction of an electrophilic terminal phosphinidene metal(0) complex with allyl halides? [2+1]-cycloaddition <i>vs.</i> C–X bond insertion
作者:Arif Ali Khan、Philip Junker、Gregor Schnakenburg、Arturo Espinosa Ferao、Rainer Streubel
DOI:10.1039/c9cc05328j
日期:——
The transiently generated electrophilic terminal phosphinidenecomplex [(CO)5WPCH(SiMe3)2] reacted with allyl halides (X = F, Cl, Br) in toluene resulting in the formation of stable C–X insertion products 3a–c and diastereomeric phosphirane complexes 4a,a′,b,b′ as well as methylenephosphirane complex 5 as observed by 31P1H} NMR spectroscopy. DFT calculations revealed that a novel rearrangement of
瞬态生成的亲电子末端次膦化合物[(CO)5 WPCH(SiMe 3)2 ]与烯丙基卤化物(X = F,Cl,Br)在甲苯中反应,从而形成稳定的C–X插入产物3a–c和非对映异构体通过31 P 1 H} NMR光谱观察到的膦烷络合物4a,a',b,b'以及亚甲基膦烷络合物5。DFT计算表明,一种新的瞬态磷杂环戊烷配合物重排涉及C→PX原子转移。
Khan, Arif Ali; Wismach, Cathleen; Jones, Peter G., Chemical Communications, 2003, # 23, p. 2892 - 2893
作者:Khan, Arif Ali、Wismach, Cathleen、Jones, Peter G.、Streubel, Rainer