Isolation of a Self-Activating Ethylene Trimerization Catalyst of a Cr-SNS System
作者:Khalid Albahily、Yacoob Shaikh、Zeeshan Ahmed、Ilia Korobkov、Sandro Gambarotta、Robbert Duchateau
DOI:10.1021/om2004699
日期:2011.8.8
possibility of forming active and selective chromium trimerization catalyst precursors. The two trivalent derivatives [(2,6-CH2SR)2C5H5N]CrCl3 (1a,b), and the divalent [(2,6-CH2S(t-Bu)2C5H5N]CrCl2·THF (2a) were isolated and characterized. Upon treatment of 1a with Me3Al, the self-activating, single-component, highly selective chromium trimerization catalyst [2,6-CH2S(t-Bu)2C5H5N]CrMe[(μ-Cl)AlMe3)]2 (3a)
二吡啶配体SNS(2,6- CH 2 SR)2 ç 5 ħ 5 N(R =吨-Bu(一),Ñ癸基(b))的制备和用于形成活性和选择性的铬的可能性测试三聚催化剂前体。两个三价衍生物[((2,6-CH 2 SR)2 C 5 H 5 N] CrCl 3(1a,b)和二价[[2,6-CH 2 S(t -Bu)2 C 5 H 5 N]六氯化碳2分离并表征THF(2a)。在用Me 3 Al处理1a时,该自活化单组分高选择性铬三聚催化剂[2,6-CH 2 S(t -Bu)2 C 5 H 5 N] CrMe [(μ-Cl)获得并充分表征了AlMe 3)] 2(3a)。