Reactions of the Disilane Me
<sub>3</sub>
SiSiCl
<sub>3</sub>
with
<i>P</i>
‐Chlorophosphaalkenes: Transient and Persistent Per‐Silylated Phosphaalkenes
作者:Cristina Mitrofan、Roxana M. Bîrzoi、Delia R. Bugnariu、Jens Mahnke、Antje Riecke、Emma Dürr (née Seppälä)、Wolf‐W. du Mont、Peter G. Jones、Heinrich Marsmann
DOI:10.1002/ejic.201000283
日期:2010.10
dimerisation products that rearrange to provide 4a, 4b in step III of the reaction sequence. This step (the P→C 1,3-trichlorosilyl shift reaction) was mimicked by the synthesis of (Me 3 Si) 2 C=P-P(SiCl 3 )tBu (7), which rearranges into an unsymmetric diphosphene tBuP=PC(SiMe 3 ) 2 SiCl 3 (8). The bulkier P-chlorophosphaalkene (iPrMe 2 Si) 2 C=PCl (1c) reacts with 5, eliminates Me 3 SiCl and thereby provides
P-氯代磷烯烃 (RMe 2 Si) 2 C=PCl (1a: R = Me; 1b: R = Ph) 与乙硅烷 Me 3 SiSiCl 3 (5) 的反应提供双膦 (Cl 3 Si)(RMe 2 Si) 2 CP=PC(SiCl 3 )(SiMe 2 R) 2 (4a: R = Me; 4b: R = Ph) 通过 Me 3 SiCl 消除。新化合物4b的结构经X射线衍射证实;它显示出晶体反转对称性。用 31 P- 和 29 Si-NMR 光谱监测反应检测到 P-(三氯甲硅烷基) 磷烯烃 (RMe 2 Si) 2 C=PSiCl 3 (2a, R = Me; 2b, R = Ph) 作为还原性 P 的主要中间体-4a、4b和P-[(三氯甲硅烷基)膦酰基]磷烯烃(RMe 2 Si) 2 C=PP(SiCl 3 )C(Sid 3 )(SiMe 2 R) 2 (3a:R = Me;3b: R =