聚集诱导的发光致发光剂(AIEgens)的广泛应用激发了具有新颖结构和功能的AIEgens的产生。在这项工作中,我们着重于通过碘介导的级联氧化Csp 2 -H或Csp-H胺化路线从苯乙炔或苯乙烯在以下条件下直接和有效地合成新型AIEgens,咪唑并[1,5- a ]吡啶鎓衍生物。温和的条件。所得化合物显示出优异的AIE特性,具有可调节的最大发射量,有吸引力的生物成像性能以及潜在的抗炎活性,在材料,生物学,医学和其他相关领域具有广阔的应用前景。
Synthesis of primary amines via nucleophilic addition of organometallic reagents to aldimines on solid support
作者:Alan R. Katritzky、Linghong Xie、Guifen Zhang、Michael Griffith、Karen Watson、John S. Kiely
DOI:10.1016/s0040-4039(97)01639-0
日期:1997.10
of amine-functionalized Rink polystyrene resin with aldehydes, react with Grignard reagents, lithium reagents or LiBH4 to afford a wide variety of primary amines in good to excellent yields upon trifluoroacetic acid cleavage. In this aminesynthesis, Rink resin functions both as a solid support and as a NH protecting group.
Synthesis of Fluorescent 1,3-Diarylated Imidazo[1,5-<i>a</i>]pyridines: Oxidative Condensation−Cyclization of Aryl-2-Pyridylmethylamines and Aldehydes with Elemental Sulfur as an Oxidant
Oxidative condensation−cyclization of aldehydes and aryl-2-pyridylmethylamines proceeded in the presence of a stoichiometric amount of elemental sulfur as an oxidant in the absence of catalyst. The reaction gave a variety of 1,3-diarylated imidazo[1,5-a]pyridines in good to high yields. The products showed fluorescence emission in a wavelength range of 454−524 nm. The quantum yields of 1,3-diarylated
醛和芳基-2-吡啶基甲胺的氧化缩合环化反应在存在化学计算量的元素硫作为氧化剂且没有催化剂的情况下进行。反应以良好至高收率得到各种1,3-二芳基咪唑并[1,5- a ]吡啶。产品显示出在454-524 nm波长范围内的荧光发射。与母体3-单取代的化合物相比,1,3-二芳基咪唑并吡啶的量子产率大大提高。
SHIMADA, KATSUTOSHI;FUJISAKI, HIDEAKI;OKETANI, KIYOSHI;MURAKAMI, MANABU;S+, CHEM. AND PHARM. BULL., 1984, 32, N 12, 4893-4906