1225463-02-4Relevant articles and documents
Tetrabutylammonium Iodide (TBAI) Catalyzed Electrochemical C-H Bond Activation of 2-Arylated N -Methoxyamides for the Synthesis of Phenanthridinones
Subramanian, Kripa,Yedage, Subhash L.,Sethi, Kashish,Bhanage, Bhalchandra M.
supporting information, p. 999 - 1003 (2021/04/19)
An electrochemical method for the synthesis of phenanthridinones through constant-potential electrolysis (CPE) mediated by Bu 4 NI (TBAI) is reported. The protocol is metal and oxidant free, and proceeds with 100% current efficiency. TBAI plays a dual role as both a redox catalyst and a supporting electrolyte. The intramolecular C-H activation proceeds under mild reaction conditions and with a short reaction time through electrochemically generated amidyl radicals. The reaction has been scaled up to a gram level, showing its practicability, and the synthetic utility and applicability of the protocol have been demonstrated by a direct one-step synthesis of the bioactive compound phenaglaydon.
Tunable Synthesis of 3-Hydroxylisoquinolin-1,4-dione and Isoquinolin-1-one Enabled by Copper-Catalyzed Radical 6- endo Aza-cyclization of 2-Alkynylbenzamide
Liu, Renzhi,Li, Meng,Xie, Wenlin,Zhou, Hongwei,Zhang, Yajing,Qiu, Guanyinsheng
, p. 11763 - 11773 (2019/10/02)
In this work, switchable synthesis of isoquinolin-1-one and 3-hydroxylisoquinolin-1,4-dione from 2-alkynylbenzamide is reported. The transformation works well with good yields and a broad reaction scope. The synthetic switch for providing isoquinolin-1-one and 3-hydroxylisoquinolin-1,4-dione is enabled by the use of a N2 or O2 atmosphere. Mechanism studies show that the reaction proceeds in a regioselective manner via a N-center radical 6-endo-dig aza-cyclization pathway.
Metal-free iodine(III)-promoted synthesis of isoquinolones
Chen, Zhi-Wei,Zhu, Yi-Zhou,Ou, Jin-Wang,Wang, Ya-Ping,Zheng, Jian-Yu
, p. 10988 - 10998 (2015/01/08)
A metal-free oxidative cycloaddition reaction of substituted benzamides and alkynes has been developed for the synthesis of isoquinolones by using bis(trifluoracetoxy)iodobenzene (PIFA) and trifluoroacetic acid (TFA). Under mild conditions, a wide variety of isoquinolones were conveniently prepared via oxidative annulation of simple N-methoxybenzamide and diarylacetylene or aryl/alkyl acetylene derivatives in yields up to 87%.