Reaction of organozinc halides with aryl isocyanates
作者:Haoran Yang、Danfeng Huang、Ke-Hu Wang、Changming Xu、Teng Niu、Yulai Hu
DOI:10.1016/j.tet.2013.01.053
日期:2013.3
Reformatsky reagent, benzylzinc bromide or alkylzinc iodides react with arylisocyanates directly to give corresponding N-substituted carbamates under mild reaction conditions. However, the reaction of allylzinc bromide or propargylzinc bromide with arylisocyanates produces the corresponding N-substituted amides. The reactions provide alternative methods for the synthesis of N-substituted carbamates
Palladium-Catalyzed Decarboxylative Synthesis of Arylamines
作者:Qipu Dai、Peihe Li、Nuannuan Ma、Changwen Hu
DOI:10.1021/acs.orglett.6b02724
日期:2016.11.4
A novel approach has been developed for the synthesis of arylamines via the palladium-catalyzed intramoleculardecarboxylative coupling (IDC) of aroyloxycarbamates, obtained in situ by reacting aryl carboxylic acids with hydroxycarbamates. The reaction offers facile access to structurally diverse arylamines with the site-specific formation of the C(sp2)-N bond under mild conditions.