Synthesis, structure and reactivity of imidazo[1,2-<i>a</i>][1,8]naphthyridines
作者:Alain Gueiffier、Henri Viols、Yves Blache、Jean Pierre Chapat、Olivier Chavignon、Jean Claude Teulade、Florence Fauvelle、Gérard Grassy、Gérard Dauphin
DOI:10.1002/jhet.5570340311
日期:1997.5
The synthesis and reactivity of imidazo[1,2-a][1,8]naphthyridines are reported. Electrophilic substitution reactions were studied and the site of the reaction was established with the aid of high-field 1H and 13C nmr spectra. The experimental C-1 position reaction was correlated with a CNDO/2 calculations.
报道了咪唑并[1,2- a ] [1,8]萘啶的合成和反应活性。研究了亲电取代反应,并借助高场1 H和13 C nmr光谱确定了反应的位点。实验的C-1位置反应与CNDO / 2计算相关。
�ber Pyrimidazol-derivate und das neue Ringsystem Triaza-3,9,11-pentanthren
作者:L. Schmid、K. Gr�ndig
DOI:10.1007/bf00900779
日期:——
Gueiffier, A.; Blache, Y.; Viols, H., Journal of Heterocyclic Chemistry, 1992, vol. 29, # 2, p. 283 - 287
作者:Gueiffier, A.、Blache, Y.、Viols, H.、Chapat, J. P.、Chavignon, O.、et al.
DOI:——
日期:——
Cyclometalations on the Imidazo[1,2-<i>a</i>][1,8]naphthyridine Framework
作者:Prosenjit Daw、Tapas Ghatak、Henri Doucet、Jitendra K. Bera
DOI:10.1021/om4004658
日期:2013.8.12
Cyclometalation on the substituted imidazo[1,2-a][1,8]naphthyridine platform involves either the C3-aryl or C4′-aryl ortho carbon and the imidazo nitrogen N3′. The higher donor strength of the imidazo nitrogen in comparison to that of the naphthyridine nitrogen aids regioselective orthometalation at the C3/C4′-aryl ring with Cp*IrIII (Cp* = η5-pentamethylcyclopentadienyl). A longer reaction time led
在取代的咪唑并[1,2- a ] [1,8]萘啶平台上的环金属化涉及C 3-芳基或C 4'-芳基邻碳和咪唑氮N 3 '。与萘啶氮相比,咪唑氮的较高供体强度有助于在具有Cp * Ir III(Cp * =η5-五甲基环戊二烯基)的C 3 / C 4'-芳基环上进行区域选择性的正金属化。较长的反应时间导致在C 3-芳基和咪唑C 5处发生双重环金属化'-H,在单个骨架上生成六元和五元金属环。通过将SnCl 2插入Ir-Cl键可访问混合金属Ir / Sn化合物。Pd(OAc)2得到涉及C 3-芳基单元的乙酸酯桥联的双核正金属化产物。在溴代衍生物与Pd(0)前体Pd 2(dba)3(dba =二亚苄基丙酮)的反应中,通过氧化途径在咪唑碳(C 5 ')上实现金属化。在这项工作中描述了在刚性和平面的咪唑啉并吡啶平台上的区域选择性CH / Br活化。
Delmas, Gregory; Deplat, Patricia; Chezal, Jean Michel, Heterocycles, 1996, vol. 43, # 6, p. 1229 - 1241
作者:Delmas, Gregory、Deplat, Patricia、Chezal, Jean Michel、Chavignon, Olivier、Gueiffier, Alain、Blache, Yves、Chabard, Jean Louis、Dauphin, Gerard、Teulade, Jean Claude