between 2 and 3 is carefully controlled. The dependence of the product distribution under experimental conditions in the case of the palladium(II) acetylides indicates that oxidative addition-reductive elimination reactions are involved. The crystal structure of trans-[(Et3P)2Pt(CCMe)2] (6b) has been determined. All the products have been characterized by 13C, 31P and 195Pt NMR spectroscopy.
alkynylstannanes之间(反应3,4)和反式- [(ET 3 P)2的Pt(Cl)的2 ](1)给出的反式- [(ET 3 P)2的Pt(Cl)的CCR](5)或反式- [(ET 3 P)2的Pt(CCR 1)2(6)在高产量(R 1 H,Me中,PH)。配合物5与炔基
锡烷反应,得到不对称的双(炔基)配合物7,反式-[(Et 3P)2的Pt(CCR 2)CCR 1 ](R 1 我中,Ph; R 2 H)。虽然
钯(II)二
氯化物2,反式- [(BU 3 P)2的PdCl 2 ],进行反应与alkynylstannanes速度远远超过1,化合物反式- [(BU 3 P)2的Pd(CCR 1)2 ] (9)与混合物总能得到的反式- [(BU 3 P)2的Pt(Cl)的CCR 1 ](8),除了对于R 1 H.化合物8可以得到纯的R 1 Me或叔卜如果之间的反应2