Ligand Stereoelectronic Effects in Complexes of Phospholanes, Phosphinanes, and Phosphepanes and Their Implications for Hydroformylation Catalysis
作者:R. Angharad Baber、Mairi F. Haddow、Ann J. Middleton、A. Guy Orpen、Paul G. Pringle、Anthony Haynes、Gary L. Williams、Rainer Papp
DOI:10.1021/om060912v
日期:2007.1.1
Convenient syntheses are described for the five-, six-, and seven-memberedphosphacycles PhP(CH2)x-1, where x = 5 (La5), 6 (La6), 7 (La7), and ButP(CH2)x-1 where x = 5 (Lb5), 6 (Lb6), 7 (Lb7). Treatment of [PtCl2(cod)] with La5-7 gives cis-[PtCl2(La5-7)2] (1a5-7), whereas with Lb5-7 a mixture of cis-[PtCl2(Lb5-7)2] (1b5-7) and trans-[PtCl2(Lb5-7)2] (2b5-7) is obtained. Metathesis of 1a7 with NaI gives
描述了五元,六元和七元磷环PhP(CH 2)x -1的便捷合成方法,其中x = 5(L a5),6( L a6),7( L a7)和Bu t P(CH 2) x -1,其中x = 5( L b5),6( L b6),7( L b7)。用L a处理[PtCl 2(cod)]5 - 7给出了顺式- [氯铂酸2(大号一个5 - 7) 2 ]( 1A 5 - 7),而用大号b5 - 7的混合物的顺式- [氯铂酸2(大号b5 - 7) 2 ](图1b 5 - 7)和反式- [氯铂酸2(大号b5 - 7) 2 ]( 2B 5 - 7)被获得。1a 7与NaI复分解得到顺式[PtI 2( L a7) 2 ]( 3a 7)和反式[PtI 2( L a7) 2 ]( 4a 7)。的晶体结构1A 5, 1A 6, 1A 7,和图4a 7已被确定。比较1a 7和4a 7的结构可知L a7号具有可变的空间体积,晶体学确定的锥角范围为137°(小于L