Polyelement substituted cyclopentadienes and indenes — Novel ligand precursors for organotransition metal chemistry
作者:Konstantin Rufanov、Evgeni Avtomonov、Nadezhda Kazennova、Vasilij Kotov、Alexander Khvorost、Dmitry Lemenovskii、Jörg Lorberth
DOI:10.1016/s0022-328x(96)06757-5
日期:1997.5
A series of polyelement substituted cyclopentadienyl and indenyl boranes and arsanes containing Me3Si-, Me3Sn- was synthesised; (C5H4SiMe3)BX2 (2, X = Cl; 3, X = Br) and (C9H6SiMe3)BX2 (4, X = Cl; 5, X = Br) were obtained by Si/B exchange reaction in a low yield when X = Cl and in a moderate yield when X = Br, whereas Flu(SIMe3)2 does not react with BBr3 at all. PhB(C5H4SiMe3)2 (6) and PhB[C5H3(SiMe3)2]2
合成了一系列含有Me 3 Si-,Me 3 Sn-的多元素取代的环戊二烯基和茚基硼烷和a烷;通过(C 5 H 4 SiMe 3)BX 2(2,X = Cl; 3,X = Br)和(C 9 H 6 SiMe 3)BX 2(4,X = Cl; 5,X = Br)得到当X = Cl时,Si / B交换反应产率低,而当X = Br时,Si / B交换产率适中,而Flu(SIMe 3)2根本不与BBr 3反应。苯(C 5 H使用合适的环戊二烯化th以高收率分别合成了4 SiMe 3)2(6)和PhB [C 5 H 3(SiMe 3)2 ] 2(7),分别为81%和99%。更大体积的茚基衍生物TrsB(C 9 H 7)2(8,Trs =(Me 3 Si)3 C-),PhB(C 9 H 6 SiMe 3)2(9),Ph 2 B(C 9 H 6SiMe 3)(10)是通过茚并锂与卤化硼的复分解反应高产率制备的。的随后金属转移Ç