Synthesis of New Bulky Bis(amidine) with the Conformationally Rigid meta-Phenylene Bridge and Its Dilithium Derivative [1,3-C6H4{NC(Ph)N(2,6-iso-Pr2C6H3)}2]Li2(TMEDA)2
作者:A. O. Tolpygin、A. V. Cherkasov、G. K. Fukin、A. A. Trifonov
DOI:10.1134/s1070328419040080
日期:2019.4
doyl chloride 1,3-C6H4N=C(Ph)Cl}2 in the presence of triethylamine in a toluene solution affords bis(amidine) 1,3-C6H4NC(Ph)NH(2,6-iso-Pr2C6H3)}2 (H2L) in which two amidinate fragments are bound by the conformationally rigid m-phenylene linker. The metallation of bis(amidine) by n-butyllithium in the presence of tetramethylethylenediamine (TMEDA) occurs readily in a tetrahydrofuran solution at –70°С
摘要2,6-二异丙基苯胺与反应米-phenylenedibenzimidoyl氯化1,3--C 6 H ^ 4 N = C(PH)氯} 2在三乙胺的甲苯溶液,得到双(脒)的存在下1,3--C 6 H 4 NC(Ph)NH(2,6-异-Pr 2 C 6 H 3)} 2(H 2 L),其中两个a基片段被构象刚性的间亚苯基连接体结合。双(am)被n-金属化丁基锂在四甲基乙二胺(TMEDA)存在下于–70°C的四氢呋喃溶液中容易形成,形成相应的a基锂络合物1,3-C 6 H 4 NC(Ph)N(2,6- iso -Pr 2 C 6 H 3)} 2 Li 2(TMEDA)2(I)。X射线结构分析表明,络合物I是单体的(CIF文件CCDC号1873201)。每个脒片段NCN被绑定到一个锂原子经由κ 2 -N,N-螯合模式。