4309-66-4Relevant articles and documents
Novel 1,3,5-triazinyl aminobenzenesulfonamides incorporating aminoalcohol, aminochalcone and aminostilbene structural motifs as potent anti-vre agents, and carbonic anhydrases i, ii, vii, ix, and xii inhibitors
Angeli, Andrea,Brázdová, Marie,Cs?llei, Jozef,Garaj, Vladimír,Havránková, Eva,Jampílek, Josef,Kemka, Miroslav,Mascaretti, ?árka,Moty?ka, Jozef,Soldánová, Zuzana,Supuran, Claudiu T.
, (2021/12/29)
A series of 1,3,5-triazinyl aminobenzenesulfonamides substituted by aminoalcohol, ami-nostilbene, and aminochalcone structural motifs was synthesized as potential human carbonic an-hydrase (hCA) inhibitors. The compounds were evaluated on their inhibition
Method for preparing amine through catalytic reduction of nitro compound by cyclic (alkyl) (amino) carbene chromium complex
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Paragraph 0015, (2021/04/17)
The cyclic (alkyl) (amino) carbene chromium complex is prepared from corresponding ligand salt, alkali and CrCl3 and used for catalyzing pinacol borane to reduce nitro compounds in an ether solvent under mild conditions to generate corresponding amine. The method for preparing amine has the advantages of cheap and accessible raw materials, mild reaction conditions, wide substrate application range, high selectivity and the like, and is simple to operate.
Cyclic (Alkyl)(amino)carbene Ligand-Promoted Nitro Deoxygenative Hydroboration with Chromium Catalysis: Scope, Mechanism, and Applications
Zhao, Lixing,Hu, Chenyang,Cong, Xuefeng,Deng, Gongda,Liu, Liu Leo,Luo, Meiming,Zeng, Xiaoming
supporting information, p. 1618 - 1629 (2021/01/25)
Transition metal catalysis that utilizes N-heterocyclic carbenes as noninnocent ligands in promoting transformations has not been well studied. We report here a cyclic (alkyl)(amino)carbene (CAAC) ligand-promoted nitro deoxygenative hydroboration with cost-effective chromium catalysis. Using 1 mol % of CAAC-Cr precatalyst, the addition of HBpin to nitro scaffolds leads to deoxygenation, allowing for the retention of various reducible functionalities and the compatibility of sensitive groups toward hydroboration, thereby providing a mild, chemoselective, and facile strategy to form anilines, as well as heteroaryl and aliphatic amine derivatives, with broad scope and particularly high turnover numbers (up to 1.8 × 106). Mechanistic studies, based on theoretical calculations, indicate that the CAAC ligand plays an important role in promoting polarity reversal of hydride of HBpin; it serves as an H-shuttle to facilitate deoxygenative hydroboration. The preparation of several commercially available pharmaceuticals by means of this strategy highlights its potential application in medicinal chemistry.
