Striking Reactivity of a Stable, Zwitterionic Silylene Towards Substituted Diazomethanes, Azides, and Isocyanides
作者:Yun Xiong、Shenglai Yao、Matthias Driess
DOI:10.1002/chem.200901337
日期:2009.8.24
6‐iPr2C6H3), towards diphenyldiazomethane (Ph2CN2), trimethylsilyl azide (Me3SiN3), and cyclohexyl isocyanide (C6H11NC) is reported. The addition of Ph2CN2 to 1 leads to the diiminylsilane LSi(NCPh2)2 2 (80 % yield), whereas the treatment of 1 with Me3SiN3 gives the spirobicyclic silatetrazoline LSi(NNSiMe3)2 3 (67 % yield), and addition of C6H11NC gives the silyl cyanide LSi(R)CN (R=cyclohexyl) 4 (32 % yield)
两性离子型 N-杂环甲硅烷基 (NHS) LSi 的反应性:1 (L=Ar N C(Me)CH C(CH 2 ) N Ar, Ar=2,6- i Pr 2 C 6 H 3),对二苯基重氮甲烷(Ph 2 CN 2)、三甲基甲硅烷基叠氮化物(Me 3 SiN 3)和环己基异氰化物(C 6 H 11 NC)进行了报道。将 Ph 2 CN 2添加到1导致二亚胺基硅烷 LSi(NCPh2 ) 2 2 (80 % 产率), 而用 Me 3 SiN 3处理1得到螺双环硅四唑啉 LSi(NNSiMe 3 ) 2 3 (67 % 产率), 添加 C 6 H 11 NC 得到甲硅烷基氰化物LSi(R)CN (R=环己基) 4 (32% 产率) 以及意想不到的氮杂硅杂环丁烷5 (41% 产率)。新型化合物通过1 H、13 C 和29 Si NMR 光谱、ESIMS、元素分析和单晶