efficient approach for the synthesis of fluorescent 2,3-naphthalimide derivatives has been developed from readily available starting materials via an intramolecular didehydro-Diels–Alder reaction, which proceeded well under room temperature, exhibiting a wide substrate scope and good functional group tolerance. The practicability of this methodology has been verified by one-step synthesis of the environmentally
Efficient synthesis of alkynyl amides via aminocarbonylation of iodoalkynes
作者:Péter Szuroczki、Borbála Boros、László Kollár
DOI:10.1016/j.tet.2018.09.001
日期:2018.10
aminocarbonylated with tert-butylamine undercarbonmonoxide atmosphere in the presence of in situ palladium(0) catalysts. The formation of the unsaturated carboxamide (alkynyl amide) is always accompanied by that of the Glaser coupling product, diphenylbutadiyne. The yield of the amide-forming reaction was optimised by the systematic variation of the phosphine ligand, carbonmonoxide pressure and temperature.
Silver-catalyzed carbon dioxide incorporation into propargylic amides
作者:Seiya Uema、Nao Kojima、Tohru Yamada
DOI:10.1093/chemle/upae001
日期:2024.3.1
synthesis of oxazolidine-2,4-diones by silver-catalyzed CO2 incorporation into propargylic amides under base-free mild reaction conditions was developed. These conditions were applied to a variety of aryl- and alkyl-substituted propargylic amides to afford the corresponding oxazolidine-2,4-diones in high yields. Combined with iodination during the CO2 incorporation reaction, the present reaction was successfully
开发了一种在无碱温和反应条件下通过银催化的 CO2 掺入炔丙酰胺合成噁唑烷-2,4-二酮的方法。将这些条件应用于各种芳基和烷基取代的炔丙酰胺,以高产率得到相应的噁唑烷-2,4-二酮。结合 掺入反应过程中的碘化反应,本反应成功应用于农药己酮的合成。