使用[Au(PPh 3)] Cl / Ag 2 CO 3催化的5 -endo-dig环化反应水在微波辐射下,我们开发了一种快速,绿色的路线,由N'-取代的N-(2-炔基苯基)脲制备吲哚-1-甲酰胺。所述方法可耐受多种官能团,包括N'-芳基,烷基,杂环,各种N-(取代的-2-乙炔基苯基)和N-(2-乙炔基吡啶-3-基)脲,并提供中等至高产率的所需产物。
AlMe<sub>3</sub>-Mediated Regio- and Chemoselective Reactions of Indole with Carbamoyl Electrophiles
作者:A. Velavan、S. Sumathi、K. K. Balasubramanian
DOI:10.1002/ejoc.201300085
日期:2013.5
we report the regio- and chemoselectivereactions of indole with carbamoylelectrophiles in presence of AlMe3. Indole-3-carboxamide was prepared in one-step from a reaction of indole with tertiary carbamoylimidazole in the presence AlMe3. Under conditions for the formation of an aluminium ate complex, the reaction was diverted to the indole nitrogen. Secondary carbamoylelectrophiles in the presence
general method for the synthesis of indole‐1‐carboxamides was developed via copper(I)‐catalyzed N‐carboxamidation of indoles with isocyanates under mild reaction conditions. This process is scalable and tolerates a wide spectrum of indoles and isocyanates to deliver the corresponding products in good to excellent yields, providing a viable synthetic approach to indole‐1‐carboxamides.
Synthesis of Unsymmetrical Urea Derivatives via Cu‐Catalyzed Reaction of Acylazide and Secondary Amine
作者:Jivan Shinde、Prakash Bhimrao Patil、Veerababurao Kavala、Ching‐Fa Yao
DOI:10.1002/cbdv.202200346
日期:2022.8
The synthesis of unsymmetricalurea generally requires toxic reagent, solvent and harsh reaction condition. Herein, we introduce Cu-catalyzed greener and safer unsymmetricalurea derivatives synthesis in ethyl acetate. This method minimized utilization of toxic reagent. A variety of indole, amines, and azides with bis-indole successfully employed leading to high yields and gram scale synthesis of isolated